May Butterflies and Wildflowers

Juvenal’s duskywing on native Geranium maculatum

“The butterfly is a flying flower,
The flower a tethered butterfly.”
― Ponce Denis Écouchard Le Brun

May is a harbinger of things to come and the herald of things that are already here. Each May I look forward to the appearance of certain ephemeral wildflowers and butterflies that are worth the effort often necessary to search for them. For instance, small butterflies often have a limited flight range, and to find them, you need to know when they start to fly, what flowers they visit, and what the host plants are for their caterpillars. Some wildflowers can be hidden by taller plants surrounding them and a surprise when come across.

Eastern pine elfin on a blade of grass

The Eastern pine elfin, Callophrys niphon, is a tiny hairstreak butterfly  that has only one brood and a flight time that may go from mid-April- June, but is more likely to be found in  flying about in mid-May. Small enough to fit on your fingernail, this elfin is often seen nectaring on blueberry, huckleberry and wild strawberry near its caterpillar’s host plant, white pine.

Eastern pine elfin

Henry’s elfin, Callophrys henrici, is another small hairstreak with an early spring flight time. Mid May is a good time to look for males perching on host plants like redbud, huckleberry, blueberry and viburnums during the day. Nectar sources include willows, hawthorn and pussytoes. Where both species are found, you may come across both the eastern pine and Henry’s elfins in the same stand of wild blueberries or huckleberries.

Henry’s elfin

Horace’s duskywing, Erynnis horatiu,s is another small butterfly found in dry fields near oaks, which is the host plant of its caterpillar. Often confused with Juvenal’s duskywing which flies at the same time, Horace’s  has several larger glassy spots on the forewings. They have a rapid, darting flight and feed and perch with wings outstretched.

Horace’s duskywing

One flowered cancer root is an interesting parasitic wildflower that has no chlorophyll and depends upon a host plant for nutrients. An annual, once the seed germinates, a host plant must be found within a day. Hosts include the genus Sedum and members of the families Saxifragaceae and Asteraceae. The plant consists of a 3-10 inch stem with a single purple to white flower which is covered in hairs and looks like sugar crystals have been sprinkled on it. Look for this plant in May in wet fields or meadows among tall grasses with host plants nearby.

One-flowered cancer root

Garlic mustard, while an invasive plant and worthy of being pulled up, is still useful to bees as a pollen and nectar source. While of use to native pollinators, I still yank out any garlic mustard I can and hope native plants like Geranium maculatum will take its place.

Tiny bee on garlic mustard flower

Columbine and Geranium maculatum bloom for a long period of time and are visited by many pollinators, with columbine a favorite of hummingbirds as well. These plants are often found together along country roadsides and ditches, as well as power line right-of-ways. If at the edge of woods, nodding trillium may also be found nearby. This trillium has very large leaves which hide the drooping flower beneath them.

Columbine and Geranium maculatum

Fringed polygala, a diminutive wildflower that is no taller than 6 inches and has tiny pink airplane- like flowers is a personal favorite. Two of the flower petals unite to form a tube, with the third keeled with a pink fringe. They can be found along dappled wood lines in May or under pines.

Fringed polygala

Shrubs and small trees also can have striking flowers, and one is the nannyberry, Viburnum lentago. Tiny white flowers occuring downward curved panicles that can be 5 inches across. Flowers attract many native pollinators and later on the fruits are eaten by many bird species.

Blackhaw or nannyberry viburnum

The native pinxter is another shrub or small tree that makes itself known through its display of showy pink flower clusters that appear before its leaves and linger well after its leaves are fully out. Hummingbirds visit the flowers of this wetland plant.

Pinxterflower near a woodland swamp

This spring has had a good display of both native and ornamental flowering trees, shrubs, bulbs and early perennials. Butterflies are already more abundant than last year, and hopefully that will continue throughout the year. Spring is the forerunner of better things to come, but for right now, spring has enough for those of us who are wildflower and butterfly enthusiasts.

Pamm Cooper

Swallowtails like this spicebush swallowtail are in flight in May

 

Outdoors in Early Spring

Cornus mas flowers- Cornelian cherry dogwood flowers in April before leaves appear

Spring has returned. The Earth is like a child that knows poems.

– Rainer Maria Rilke

This spring has arrived at a plodding, glacial pace. Several snows in April and chilly, gray days which far outnumber the anticipated sunny, warmer ones seem to have put nature into a low gear. Birds that normally would have arrived in early April, like chipping sparrows, were late arrivals. Forsythia bloomed later than it did the past few springs, and soils have remained cold enough to hold back lawn grass growth. But the cold weather can’t last, and we finally have seen a few sunny days this week.

Native Colletes inaequalis ground nesting bee at entrance to her nesting tunnel- one of the earliest spring flying bees

Tree swallows arrived a couple of weeks ago, and barn swallows followed a week later. I always check out a nice swampy area along a road every spring when false hellebore is about a foot tall. This is when many migrating warblers start to come through on their way north. Two of the earlier arrivals are the yellow-rumped warblers and the palm warblers, which can often be seen together in good numbers as they catch insects on the fly. The loud drumming of pileated woodpeckers can be heard and barred and great horned owls should have nestlings by now. Canada geese should be sitting on eggs, with young hatching out in a week or so.

Pileated woodpeckers

Bloodroot is now blooming, and before it is done, red trillium should also be blooming. Trout lily leaves are up, and its flowers should appear in a week or so. The early flowering azalea, Rhodendron mucronulatum, is flowering now with its welcome pink flowers. Bees were all over several plantings of this shrub on the UConn campus this past sunny Tuesday. Pieris japonica, or Japanese andromeda, Cornus mas and star magnolias are also in full bloom. Ornamental cherries are just beginning to bloom now and as the native black cherries begin to leaf out, look for tents made in the forks of branches by the Eastern tent caterpillars. Native bluets began blooming this week, and many native and honey bees, as well as early flying butterflies avail themselves of the nectar these tiny blue flowers provide.

Purple trillium blooms shortly after bloodroot

Rhododendron mucronulatum azalea in bloom in late April. Note that this azalea does not retain its leaves through the winter

Spring peepers have been singing like a glee club, and are a welcome white noise in early spring for those of you who live near ponds. In vernal pools, egg masses of wood frogs, spotted salamanders and American toads can be found now. Diving beetles and water striders are also active now. Our vernal pools support life stages of many kinds of insects and amphibians, and provide water sources for many animals and birds as well.

Gilled larva of the spotted salamander swims among wood frog eggs in a vernal pool

Red, or swamp, maples are already dropping flowers, while spicebush are just starting to bloom.  Snowball viburnums are leafing out and new leaves seen curling are probably signs of snowball aphid feeding. Look inside the curled leaves for these aphids. While not a cause of alarm for the health of the plant, it is a cosmetic issue. Redbuds are showing deep pink flower buds as are the larger ornamental cherry varieties like Prunus subhirtella, the weeping Higan cherry. When these bloom, crabapples are not far behind.

Japanese Andromeda, Pieris japonica, can bloom in March. This year it has remained in bloom through late April. Many bees visit its flowers.

More insects are becoming active now with the warmer weather. Look for the striking six- spotted tiger beetle along open woodland trails. Cabbage white butterflies are also arriving, and will lay eggs on native mustards and the invasive garlic mustards. The second generation may end up on your brassica later in the year. Mourning cloak and comma butterflies are out now, and look for swallowtails and the spring azure butterflies. Migrating red admirals and painted ladies usually arrive around the time of crabapple and invasive honeysuckle bloom. I can hardly (but must!) wait to see a swallowtail butterfly. To me this is a certain harbinger of steady, warm weather.

The 6-spotted tiger beetle is hard to miss

The mourning cloak butterfly survives winters here in the north as an adult. Often it is seen imbibing at sap flows or on animal dung

Tiger swallowtail on native bluets

As you venture out this spring, listen for the songs of newly arriving birds, observe  insects as they go about their daily activities and enjoy the flowers that join together to make spring a poetic response to winter. Definitely a more charming repertoire in answer to winter doldrums than my own seemingly useless “ hurry up spring” song and dance…

Pamm Cooper