Gardening


As a plant pathologist, I enjoy a little plant disease humor on the rare occasions when I run across some.  On a recent visit to the Plant Pathology department at Cornell University while there for a workshop, I saw this fun list of

TOP TEN things PLANT PATHOLOGISTS know (slightly revised and with pictures added):

toptenplantpathologistfacts-cornell

I worked on trying to put this right on the blog for a long time but the photos and text wouldn’t line up right.  So if you click on the link, you can see it the way it should be!

Thanks for visiting!

J. Allen

Special occasions and holidays like Valentine’s Day inspire many of us to send flowers to those we hold with love and affection. In selecting the contents of your bouquet, make it especially memorable by choosing flowers that carry with them symbolic messages of endearment. Many flowers and plants have been associated with certain emotions, feelings and attributes throughout the centuries. This romantic notion was most apparent during the Victorian era with its accompanying publication of The Language of Flowers.

To the Victorians, each type of flower conveyed a message which could be modified by blossom color and also its stage of development. By combining different flowers in nosegays or bouquets, you could strengthen, diminish or deliberately misconstrue your floral communication.

A red rose, perhaps the most sought after flower come Valentine’s Day, signifies love, pure and ardent. White roses as well as most other white flowers often stand for truth and purity, while a yellow rose represents jealousy or mistrust. Not all yellow flowers convey negative messages; yellow tulips mean hopeless love, yellow violets, rural happiness and yellow jasmine, grace and elegance.

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Red rose bouquet from UConn blooms,

Members of the pinks family including carnations are associated with betrothal, marriage and fidelity. In fact, at one time, their clove scented flowers were used to flavor the wine given to brides following the wedding ceremony. Clusters of phlox blossoms were frequent components of Victorian tussie-mussies. Delightfully scented, they were also a symbol of sweet dreams and implied a proposal of marriage. Because of its clinging habit, English ivy too, is symbolic of fidelity and married love.

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Carnation arrangement. Photo by dmp.

Otherwise known as heart’s ease, love-in-idleness and tickle-my-fancy, the pansy, as its French name ‘pensee’ suggests, stands for romantic thoughts. You are telling someone special ‘I am thinking of you’. It was also thought that an infusion of pansy leaves would cure a broken heart. A bouquet of jonquils says ‘I desire a return of affection’ while the buds of a moss rose are a confession of love.

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Pansies by Lisa Rivers.

A white daisy signifies innocence, a white chrysanthemum, truth. Forget-me-nots speak for themselves as does love-lies-a-bleeding. Lilacs were symbolic of chastity, purity, innocent beauty and immortality. Stocks meant lasting beauty.

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Daisies by dmp.

Pink larkspur represents fickleness, purple larkspur, haughtiness. Snapdragons indicated presumption while a rose-scented geranium showed preference.

Herbs, foliage plants, and even many fruits had symbolic meanings. Rosemary is for remembrance, bay stood for constancy or immortality, and ferns for fascination. Giving your love a peach meant ‘Your qualities, like your charms, are unequalled’. A pineapple says ‘You are perfect’. An apple signifies what else but temptation!

For a long lasting floral conversation piece, make a nosegay or arrangement using dried flowers and plant materials. Add delicate scent by tying it with a grosgrain ribbon soaked in rose water and dried. A few drops of essential oil will also perfume your bouquet.

Start a new tradition with every bouquet you send. Spell out your message of love or friendship with floral elegance.

Dawn P

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Groundhog in field. pcooper photo

February brings groundhog day at its beginning and some longer day-length and light at the month’s end. It is always a little exciting to watch silly weather-men and women  with a groundhog waiting to see if it will cast a shadow on February 2. If the groundhog sees his shadow, it is believed he will go back to sleep for we will have six more weeks of winter.  We in Connecticut should know it is still too early for this hibernating animal to wake from its winter slumber deep underground if it were left to its own in a natural environment. Thankfully we have a few nature centers caring for rescued animals that would otherwise not survive in the wild. Some have a groundhog or two to share with the public on this most ceremonious day of weather prediction. And the annual tradition continues with much lightheartedness bringing needed smiles and community, and a 50 50 chance of accuracy.

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Punxsutawney Phil (AP Photo/Gene J. Puskar)

How they get the groundhog to participate is a great feat, because after all, it is a wild animal most people encounter feeding on lawn and gardens, or on sides of highways in open land. They are those brown, ground hugging mounds moving in the grassy areas along the roads.

Other names for groundhog are woodchuck and whistle pig. They do make a whistling sound when alarmed and a ‘chuck chuck’ sound both inspiring their common names. Their Latin name is Marmota monax and are a rodent in the squirrel family. These ground dwelling rodents dig tunnels two to five feet deep and up to 30 feet long. They usually produce one generation per year in litter numbers of two to six born in April or May. At six weeks of age, young are free to forage for themselves and leave the den on their own. That is a lot of woodchucks for one small, suburban lawn!

I personally have a running summer battle with a family of groundhogs determined to scale the fence surrounding my vegetable garden and eat just about everything I grow.  Fencing should be left loose and angled out and away from the garden so the climbing animal will fall out rather than into the garden. Bury the bottom of the fence 1 1/2 to  2 feet deep to prevent digging under the fence. Stringing an electric fence wire four to six inches above the ground in addition to the fence will give the animal a shock, providing it with a lesson not to return. Animal repellents of hot pepper, garlic, sulfur and predator urine can all be sprayed around areas you want to protect. These usually need to be reapplied after hard rain. It is illegal to put out any poison which targets woodchuck. Trapping is allowed according to the Connecticut DEEP, with relocation onto State managed wildlife areas or forests. However, DEEP does not recommend relocating nuisance animals as it is very stressful for the animal. It will not have housing, food or water and usually ends in death of the animal. DEEP recommends humane euthanization.

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Woodchuck in trap. Pamm Cooper photo

Groundhog, woodchuck or whistle pig, whatever you call them, they can do a lot of damage. Below is a picture of a pretty old weeping cherry tree on the great lawn of the UConn campus in Storrs. I have been watching the steady decline and eventual death of this specimen tree due to the extensive tunneling and den building, excavating under the roots. There are large soil mounds and a wide hole giving access and  protection. UConn has many such areas providing shelter to the ever-growing population of these animals, which can be common place to see all over campus. Stepping in one of holes can also be a danger. Farmers have long battled with woodchucks making holes in pasture and field, especially dangerous for horses and cows which could break a leg.

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Death of weeping cherry due to woodchuck tunneling under root system. Pamm Cooper photo.

If control measures of fences, repellents and traps still leave you with a groundhog problem, there is always the option of hiring a Nuisance Wildlife Control Operator licensed by the State. http://www.ct.gov/deep/lib/deep/wildlife/pdf_files/nwco/nwcodir.pdf

-Carol Quish

“Clouds are not spheres, mountains are not cones, coastlines are not circles, and bark is not smooth, nor does lightning travel in a straight line.”

– Benoit Mandelbrot, introduction to The Fractal Geometry of Nature

At this time of year many of the trees and shrubs in our landscapes are mere skeletons of their summer glory. Their beautiful canopies of leaves have been shed and they provide little visual interest. Unless you look a bit closer…

maple-tree

This is actually a great time to observe the branching patterns of deciduous trees. A closer look reveals that they are eerily similar to our own vascular and respiratory systems. As each system goes from the main trunk to the larger limbs to the smaller branches and then the twigs we see the same fractal branching that occurs in the network of blood vessels in our lungs. How incredible that such like systems are actually performing a reverse process. Trees are taking in our exhaled carbon dioxide and releasing oxygen (O2) into the atmosphere.  In turn, we inhale that O2 rich air into our lungs where it travels through the increasingly smaller vessels until it reaches the capillaries where it passes through into our bloodstream. As the oxygen-rich blood travels through our body our cells use the oxygen and release CO2 back into the bloodstream where it travels back to our lungs before releasing CO2 as we exhale.

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The important thing to remember is that for both of these systems to work well they need to cover a large surface area and fractal branching is the most efficient way for that happen. Fractal branching is a pattern that repeats itself in either larger or smaller scales, each step looking like a copy of the same overall shape. These patterns are called self-similar and are found in many areas in nature from trees to rivers and many more. Ferns are a great example of a self-similar fractal as each pinnate leaf is a miniature version of the larger frond that it branches off from although natural branching fractals do not go on infinitely as mathematical fractals can. Remember the Fibonacci Sequence from your high school math class?

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Most of the fractals that we are familiar with and see on a regular basis fall into the category known as spiral fractals. Spiral fractals are responsible for some of the most beautiful forms that can be found in nature. Many galaxies are spiral fractals. The marine animal known as the Nautilus is perhaps one of the most well-known examples of the spiral fractal. But there are also so many spiral fractals that we encounter in the plant kingdom on a daily basis.

Ferns exhibit fractal properties in two ways. The uncurling of a new fiddlehead in the spring is a lovely example of a spiral fractal while a mature Japanese Painted fern (Athyrium niponicumn) pictured above shows the self-similar pattern of a branching fractal.

The Monkey Puzzle tree (Araucaria araucana)  has a most interesting growth pattern with each branch a continuing spiral of tough, scale-like leaves. Although native to Chile and Argentina, these images are of a specimen that is located on the Long Island campus of Hofstra University.

Closer to home are some plants that are in many of our gardens during the summer season. The compact spirals of Stonecrop, also known as Sedum, help to form the tight clusters of thick leaves that give it its distinguishing look. I always love the way that dew or rain collect in the in little cups that are formed.

Sunflowers (Helianthus annuus), Gerbera (Gerbera) daisies, and Coneflowers (Echinacea purpurea) show their spirals on a grand scale.

Decorative cabbage and kale (Brassica oleracea) are seasonal plants that bring their cold-resistant beauty to our fall landscaping and thus complete a full year of natural fractals that can be found all around us .

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Susan Pelton

Spittlebugs are common and easily recognized by the white foamy ‘spittle’ produced by the nymph or immature stage of the insects as they feed. Adults are less often seen but are commonly known as froghoppers (close relatives of leafhoppers, etc).  Depending on the reference, there are anywhere from 30 to 60+ spittlebug species in the United States.  All feed on plants, including both woody and herbaceous types.  Some spittlebugs have broad host ranges and others narrow.

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‘Spittle’ produced by nymphs on a plant. Photo by: G. Lenard, LA State Univ.

 

There is usually only one generation per year and most overwinter in the egg stage inside overwintering plant tissue where they were deposited by the females in from mid to late summer to early fall, depending on species. Hatch occurs in the spring, probably in May in Connecticut.  Even though spittlebugs feed by extracting plant sap/juice through needle-like mouth parts, they seldom cause notable injury to the plant.  There are a few exceptions including the meadow spittlebug (Philaenus spumarius) and the pine spittlebug (Aphrophora cribata).

Color variations of the meadow spittlebug adult.  Photos: Cheryl Moorehead,     bugwood.org

The meadow spittlebug has a broad host range that includes both herbaceous and woody plants. It is reported to cause damage in clover, strawberry, mint, herbaceous ornamentals and both coniferous and broad-leaved woody plants when present in high numbers.  Other common names include the common froghopper and the cuckoo spit (most common name in the UK).  Eggs are laid in the stems or crevices of host plants in the fall.  When they hatch in the spring, nymphs usually feed on the plant the eggs were laid on but they will move to younger more tender tissues as the plant grows.  There are five nymph stages and all produce spittle as they feed.   Once the adult stage is reached, spittle is no longer produced and the adult is quite mobile, quickly jumping a long distance relative to its size when disturbed.

The froghoppers or adult stage are so-called because their bodies are somewhat wider at the rear like a frog. The name cuckoo spit may have come about because the spittle tends to be first seen in the spring around the same time that the first calls of the cuckoo bird are heard.  Most adults are brown to green in color with only subtle markings but some species have striking coloration or patterns.  The meadow spittlebug adult is quite variable in coloration.

So, about the spittle. The spittle offers some clear benefits to the nymph(s) hiding within.  First, it helps prevent the soft-bodied little guys from drying out.  In addition, it protects them from detection by potential parasites and predators.  A single mass of spittle may be inhabited by multiple nymphs feeding in the same area on the plant.  How is the spittle produced?  First, the spittlebug ingests more plant sap than it needs for its nutrition/sustenance.  The excess is expelled through the anus as a watery waste product.  It mixes with a mucilaginous fluid produced by glands on the abdomen and air bubbles are introduced from a special canal by abdominal contractions.  This is pretty interesting stuff going on in gardens, forests and meadows all around us each spring and early summer!

spittlebugnymph-bugwood Spittlebug nymph.  Photo: David Cappaert, Bugwood.org

If you would like to get a closer look at a nymph, don’t be afraid to brush the foam carefully away from a plant and look for them inside. They will be up to ¼” long depending on their stage of development and may be yellowish, greenish or brown in color.  They are elongated and generally are positioned head down. This facilitates the movement of the spittle downward to cover them.  Nymphs are shy and will not be happy to be exposed.  They will attempt to walk away but cannot run or fly.

The biggest problem with spittlebugs in the garden, whether it’s an ornamental or food garden, is the unsightliness of the spittle masses. Spittle and nymphs can both be washed off the plants with a steady stream of water.  On a small scale, they can be hand-removed and disposed of.  Normally, no chemical controls are recommended and the spittle protects nymphs from contact insecticides.  Not sure if there are enough spittlebugs to cause plants to be weakened?  Look for distorted or stunted new growth, and of course numerous spittle masses on the same plant.

In a few cases, additional injury to the host plant can occur if toxic substances are introduced into the plant while feeding or if the froghopper/spittlebug is vectoring a plant pathogen (could be a virus or phytoplasma).  Feeding wounds can create entry points for some pathogens.

By J. Allen

January always finds me a bit restless. The holidays are over and it is time to dedecorate the house, the weather may or may not support outdoor activities like walks or cross-country skiing, and that New Year’s resolution of cleaning up the attic seems more daunting with every passing week. So to find some peace of mind, I reach for a hot cup of herbal tea and my stack of seed and plant catalogs that has been climbing higher each day the mail comes.

Like many gardeners, I start off with a wish list. Fanciful, curious, gorgeous or productive new, or previously unknown to me, selections are listed in my seed notebook to be later pared down to what I actually have room in the garden for. The eyes are always bigger than the garden!

I thought I would share some selections in the first few catalogs that I have received which caught my eye. Several new selections from the Park Seed catalog (www.parkseed.com) got my attention. Since I am always looking for cut flower selections, cosmos ‘Cupcakes Mixed’ looked interesting with its fused petals resembling a cup, hence the name. It is supposed to grow 4 feet tall and stand up to heat, rain and drought.

Multi-colored marigolds may work well as bedding plants. ‘Strawberry Blonde’ has double pompom blossoms with petals of coral, peach, gold and orange. I am seriously considering it for lining the front walkway this year. ‘Fireball’ also offers big double flowers that are open red and then turn orange, bronze or gold. Both are compact plants reaching about 10 inches high.

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Strawberry Blonde Marigold from http://www.parkseed.com

Parks also offers a blueberry that fruits twice in one year. ‘Bushel and Berry™ Blueberry Perpetua’ not only fruits in midsummer and again in fall but the leaves change to red in the fall and the yellow stems turn red in the winter making this 4 to 5 foot high plant productive and attractive year round.

Pinetree Garden Seeds (www.superseeds.com) is offering two new kales. ‘Siberfrill’ is quite decorative with its frilly edged leaves while ‘Dazzling Blue’ is just that with bluish-tinged leaves and pinkish-purple midribs. Enjoy them for their decorative as well as eating qualities. ‘Edox’ lettuce is a disease-resistant, butterhead type with attractive burgundy edged leaves that reputedly grows well spring through fall.

Two snap peas will also likely end up in my garden. ‘Sugar Magnolia’ has pretty pink bicolored flowers that turn into deep purple edible podded peas and plants are said to beat the mid-July heat. ‘Opal Creek’ sports white flowers and pastel lemon pods on 6 foot vines and also holds up well to summer heat. ‘Corbaci’ is a sweet pepper with super long, thin fruits that bears heavy and early. This Turkish heirloom can be eaten at any stage and can be used fresh, dried, for pickling or frying.

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Sugar Magnolia Pea from Pinetree Seeds http://www.superseeds.com

It is hard to choose tomatoes or peppers from Totally Tomatoes (www.totallytomatoes.com) as there are just too many choices. Usually I just grow sweet peppers but may try ‘Sriracha’ this year. The chili-type fruits are supposed to be mildly hot but not overpowering. The thick-walled, early maturing fruits are good for roasting and pickling. Another interesting pepper is ‘Jupiter’ which is an open-pollinated reintroduction. Blocky fruits ripen to red on 30 inch, tobacco mosaic resistant plants.

‘Sunrise Sauce’ is a hybrid, determinant tomato that is resistant to fusarium and verticillium. Three to 4 ounce orange fruits taste like the traditional red Romas. High yielding fruits ripen all at once which is convenient for sauce making. ‘Tasmanian Chocolate’ is in a unique dwarf class of tomatoes. Three foot tall plants produce large 8 to 12 ounce mahogany red, beefsteak tomatoes delicious fresh or cooked.

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Tasmanian Chocolate tomato. Photo from http://www.heritageseedmarket.com

Johnny’s Selected Seeds (www.johnnyseeds.com) is offering All America Selections Regional Winner, eggplant ‘Patio Baby’. This compact mini eggplant would work well in small gardens and containers. Purple flowers are followed by purple, 2 to 3 inch, spineless fruits.

‘Xtra-Tender’ is an early bicolor sweet corn and the first supersweet variety available as organic seed. Supposedly it germinates well in cool soils, is of excellent eating quality and matures in 71 days.

New to me are some mini romaine lettuces. Too often too many lettuces mature all at once and there is just so much salad a person can eat. ‘Dragoon’ is a green, mini romaine that is slow to bolt. ‘Breen’ is a medium bronze mini only 8 inches tall and ‘Trunchas’ is a dark red. All mature in less than 50 days and show some disease resistance.

Sunflower ‘Florenza’ has dark centers ringed with a deep burgundy and tipped with gold. Plants grow about 4 ½ feet tall and flowers have a mild chocolate fragrance.

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Sunflower Florenza from http://www.johnnyseed.com

The last couple of years I lost my basil plants to a disease known as basil downy mildew. New from Burpee (www.burpee.com) is ‘Pesto Party’, a late-flowering basil with tolerance to downy mildew. Coleus ‘Pineapple Surprise’ sounds like a container hit with its chartreuse and burgundy leaves swirled with chocolate brown.

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Basil Pesto Party from http://www.burpee.com

A definite addition to the cutting garden is celosia ‘Red Velvet Cake’. Three to 4 foot plants have strong stems that do not require staking. The vibrant crimson heads look like they will make great fresh and dried flowers.

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Celosia Red Velvet Cake from http://www.burpee.com

Territorial Seed Company (www.territorialseed.com) has a uniquely colored butternut squash, ‘Autumn Choice’. Classic butternut-shaped fruit have attractive orange and green speckled bands. Not only is butternut a great tasting squash but because of its solid stems, members of this species, Cucurbita moschata, are not attacked by squash vine borers.

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Autumn Choice Winter Squash from http://www.territorialseed.com

Another fun squash is offered by Henry Fields (www.henryfields.com). ‘Dinosaur Eggs’ is a hybrid summer squash with round fruit in three colors – pale green, dark green and yellow. It is listed as disease resistant and productive.

These are just some offerings that piqued my interest and I have yet a dozen or more catalogs to go through. It is fun to try new vegetables and flowers while growing some old favorites. The hard part is whittling down the list to ones you can afford – both space and time wise.

Happy Horticultural New Year!

Dawn

 

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Bag of Lime

Many Connecticut residents spread limestone on their garden beds and lawn as an annual ritual. Why do we do this? Some do it because their parents did it, or the guy at the garden center told them to and sold them the limestone. How much should be purchased and applied is another mystery to most. The real answers of limestone’s why, how much and when lies in the science of soil.

Soil is made up of sand, silt, and clay. The percentage of each of these three determine the soil’s texture, which will determine how the water will move through it, or hold on to moisture. More clay equals wetter soils; more sand, better drainage. The sand, silt and clay are tiny pieces of rock, broken off of bigger pieces over much time by weathering. The rocks that makes up much of Connecticut has a naturally low pH in the 4.5 to 5.5 range. Other areas of the country and world have different rocks with different pH ranges. Acid rain falling onto the ground lowers pH levels, as does the action of organic matter decomposing which produces organic acids. Even the normal function of respiration by plants mixing oxygen and water together produces carbonic acid in the soil. More acid equals lower pH. No wonder why we need to test, monitor and fight the natural tendency of our soil to stay in a low pH range.

Most plants we want to grow require a pH range of 6 to 7. This means we have to change the pH to grow plants like grass, tomatoes, peppers, squash or garlic by adding limestone which raises the pH level. The only plants consistently happy with our native range are native plants! They have evolved in the local soil. This is why blueberries, oak trees and mountain laurel fill our forests and wild areas. Pines are another tree preferring our lower pH.

Why do the grass and vegetables prefer the 6 to 7 pH range? Because more of the nutrients that these species of plants need are available when the soil pH is in that range. The easiest way to think of pH is it is a measurement of the amount of hydrogen ions in the soil. The more hydrogen ions, the more acidic the soil is. The pH of the soil affects the availability of all plant nutrients. Just as plants have ideal moisture and light requirements, they have a preferred pH range as well.

The pH range numbers 0 to 14. The middle is neutral at 7. Pure water has a pH of 7. 0 is acid or bitter; 14 is alkaline or sweet. Old time farmers used to taste the soil to determine if it was bitter (acid, low) or sweet (high, alkaline). I am glad we have pH meters and laboratory soil testing equipment now!

0_________________________________________7_____________________________________14 Acid (Bitter)                                                                           Neutral                                                                  Alkaline (Sweet)

Soil pH levels also affect other life in the soil such as insects, worms, fungi and bacteria. The soil is alive with more than just plants. It is an entire ecosystem sustaining many life forms all interacting with each other. The pH level is probably the most important place to start when trying to provide the best environment for whatever plants you are growing.

Have your soil tested for pH and nutrient levels at the UConn Soil Nutrient Laboratory www.soiltest.uconn.edu. Have the $12.00 basic test for Home Grounds and Landscapers done. Forms and directions are on the website. We will be offering free pH only tests at the CT Flower Show February 23-26, 2017. A half cup of soil is needed. If you don’t have snow covering your ground now, go gather some soil now and hold it until the show. Once you know the pH of your soil, we can tell you how much limestone to apply in the spring. Fall is the best time to put down lime as it needs about six months to fully react and change the soil pH. Never put limestone down on frozen or snow-covered soil to avoid it running off to areas you didn’t intend to lime, like the storm drain. Limestone will not soak into frozen soil.

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pH Meter

-Carol Quish

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