Spring Flowers for Bees

Crabapples in bloom along a driveway

“In the village, a sage should go about
Like a bee, which, not harming
Flower, colour or scent,
Flies off with the nectar.”
― Anonymous

As March begins and weather starts to warm up, not only plants are awakening from their slumber. Also beginning to stir are many native and non- native bee species including Collettes ssp. Bombus spp.Honey bees, Andrena spp. and Megachile spp. These bees need flowers available for nourishment and food stores for their nesting chambers starting as early as March. Plants that support bees in spring may be native and non-native, wild and cultivated, weeds or ornamentals. The following are just a handful of plants that can be especially helpful in supporting bees from March- May.

Native bee on a dandelion flower

There are several non-native plants that flower in early March and are visited by bees- crocus, Whitlow grass, dandelions, Cornell pink azalea and daffodils. In the early spring, blooms are few and far between, and while daffodils are not usually considered pollinator plants, bees like honeybees will visit daffodil flowers if there is not much else around. The Rhododendron mucronulatum ‘Cornell Pink’ azalea is one of the first azaleas to bloom here in Connecticut. Loaded with pink blooms, many species of pollinators, not just bees, will visit these flowers.

‘Cornell Pink’ Azalea is one of the first cultivated azaleas to bloom in the spring

Daffodils

Korean Spice Viburnum Viburnum carlesii blooms in April and has abundant clusters of extremely fragrant flowers that attract many pollinators. Arrowwood viburnum is also a spring bloomer and is native.

Korean spicebush Viburnum has extremely fragrant flowers

Amelanchier canadensis, shadblow serviceberry, is a small tree or multi- stemmed shrub that flowers in April. Both bees and butterflies will visit the flowers.

Amelanchier

Crabapples, black cherry and flowering plum attract many bee species and other pollinators in late April- May, including Osmia spp. like the red mason bee, Osmia bicornis. Cornus mas, Cornelian cherry, is a small tree or large shrub that blooms in late winter or early spring. Clusters of small yellow flowers appear before the leaves. Andrena bees, native specialist pollinators, visit these flowers.

Cornus mas

Dandelions and dead nettles, while considered weeds in a lawn, attract many spring pollinator species and a few in a lawn should not be the end of the world…

Bumblebee on dead nettle

Japanese andromeda, Pieris japonica, is a non-native evergreen shrub that can bloom from March- June, depending upon the cultivar. Flowers are white or shades of red and resemble the urnlike tubular flowers of blueberry.

Japanese Andromeda

Bloodroot is a low growing native perennial that can bloom in April. Many bees, especially Megachile spp. and Coletes spp. visit flowers of this open woodland species. There are many other native perennials that have early blooms that support bees. Including Solomon’s seal, Geranium maculatum (cranesbill), and columbine that are all shade tolerant.

Native bloodroot

Solomon’s seal attracts bumblebees and hummingbirds

Cornus florida, the native flowering dogwood tree blooms usually by mid-May. The native dogwood has white flowers and an open, layered form in forest understories, while cultivars may have pink to red flowers and various sizes and growth habits. Red maples are among the earliest maples to flower and bees will visit the flowers readily.

Flowering dogwood ‘Cheyenne Brave’

Red maple flower

There are many more plants that will support bees in the landscape whether natural or cultivated.  Consider planting a few of these, if you have the room and a desire for a little splash of color in the spring garden. I wonder if Ray Bradbury was right, when he wrote in “Dandelion Wine”-  “Bees do have a smell, you know, and if they don’t they should, for their feet are dusted with spices from a million flowers.”?

Native columbine and Geranium Maculatum along a country road

Carpenter bee on native redbud

Pamm Cooper

A list of good plants for spring pollinators:

Acer (maples)         Phlox                    Lupine                        Alders              Lilac

Amelanchier           Violets                  Eastern redbud        Spicebush       Cornus spp.

Salix (willow)          Columbine           Cranesbill                  Sassafras         Currant            

Blueberry                Chokecherry        Cornus mas              Hyacinth          Raspberry  

Basswood                Crabapple            Trillium                     Dandelion       Phlox 

Crocus                      Viola spp.             Currant                    Dead nettle     Prunus spp.     

Huckleberry

 

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