Terms of flowering honey plants in the USA and Canada

According to observations of naturalists and beekeepers.

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Common name:

California thistle

Scientific name:

Cirsium arvense.

Life form:

Forb, Herb.

Flowering time:

no data.

Flowering period

in Illinois for this plant is: JuneEarly September.

NECTAR PRODUCTION: 
Minor
 
SOURCE FOR HONEY BEES:
Minor

General distribution:

Cirsium arvense is a perennial species of flowering plant in the family Asteraceae, native throughout Europe and western Asia, northern Africa, and widely introduced elsewhere. The standard English name in its native area is creeping thistle. It is also commonly known as Canada thistle and field thistle.

Cirsium arvense was accidentally introduced to North America in the 1600s and is designated as a noxious weed in 43 states. It occurs from Alaska east to the Northwest Territories, Quebec, and Newfoundland and south to California, New Mexico, Kansas, Arkansas, and North Carolina.

Map of distribution and habitat in USA

This plant is present in at least 54 states/provinces in this country.

See The Map

Botanical description:

Cirsium arvense (Canada thistle) has a deep and wide-spreading root system with a slender taproot and far-creeping lateral roots. It often forms large patches, and individual clones may reach 35 m in diameter. Most Canada thistle roots are in the top 0.2-0.6 m of soil, but roots can extend as deep as 2-6.75 m.

Canada thistle has slender aerial shoots with leafy stems reaching 0.3-2 m tall. Leaves are 3-18 cm long and 0.5-6 cm wide. Canada thistle leaf morphology (texture, hairiness, loving, and spininess) can vary considerably, even within a geographical region. Canada thistle has numerous above-ground branches that bear several, small flowerheads (1-2 cm in diameter) in clusters. Seeds are 2.4-5 mm long, and 1 mm in diameter with a pappus of feathery bristles.

Seasonal development:

Plants develop new roots and underground shoots in January and begin to elongate in February. New shoots from established Canada thistle plants begin to emerge when the average weekly temperature reaches 41 degrees Fahrenheit (5 °C), with optimum emergence after temperatures are at least 46 degrees Fahrenheit (8 °C). Plants remain short until long days trigger flowering and stem elongation, normally in May and June, or about 3 weeks after emergence. When soil is warm and temperatures are moderate (as in fall) Canada thistle grows vigorously.


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List of honey plants that may be blooming now in Illinois
See the entire list

Cercis canadensis (aka: Eastern redbud, Redbud, Cersis Reniformis)

Malus angustifolia (aka: American crab apple, Buncombe crab apple, Crabtree, Narrowleaf crab, Narrowleaf crab apple, Southern crab, Southern crab apple)

Acer saccharinum (aka: Silver maple, Soft maple)

Salix nigra (aka: Black willow, Swamp willow, Southwestern black willow, Gulf black willow, Scythe-leaved willow)

Pyrus communis (aka: European pear, Common pear)

Celtis laevigata (aka: Hackberry, Sugarberry, Lowland hackberry, Sugar hackberry, Arizona sugarberry, Netleaf hackberry, Small's hackberry, Southern hackberry, Texas sugarberry)

Acer negundo (aka: Boxelder, Western boxelder, Arizona boxelder, California boxelder, Texas boxelder, Interior boxelder, Violet boxelder)

Salix lucida (aka: Shining willow, Greenleaf willow, Tail-leaf willow, Whiplash willow, Pacific willow, Lance-leaf willow, Longleaf willow, Red willow, Western shining willow)

Salix discolor (aka: Pussy willow, American pussy willow, Glaucous willow, Large pussy willow)

Salix amygdaloides (aka: Peachleaf willow, Peach leaf willow)

Amelanchier arborea (aka: Common serviceberry, Downy serviceberry, Juneberry, Shadbush, Shadblow, Sugarplum)

Acer saccharum (aka: Sugar maple, Rock maple, Hard maple)

Populus tremuloides (aka: Quaking aspen, Trembling aspen, Aspen, American aspen, Mountain aspen, Golden aspen, Trembling poplar, White poplar, Popple, Alamo Blanco)

Malus coronaria (aka: Sweet crab apple, Garland crab, Alabama crab, Allegheny crab, American crab, Baltimore crab apple, Buncombe crab, Dawson crab, Dunbar crab, Fragrant crab, Garland tree, Lanceleaf crab apple, Missouri crab, Sweet-scented crab, Sweet wild crab, Wild crab, Wild sweet crab, Wild Crab Apple)

Prunus cerasus (aka: Sour cherry, Tart cherry, Dwarf cherry, Montmorency cherry)

Prunus pumila (aka: Sandcherry, Western sandcherry, Eastern sandcherry, Great Lakes sandcherry)

Liriodendron tulipifera (aka: Tuliptree, Blue-poplar, Tulip-poplar, Yellow-poplar, Yellow wood)

Salix bebbiana (aka: Bebb willow, Beak willow, Beaked willow, Long-beaked willow, Diamond willow, Chaton, Petit Minou, Smooth Bebb willow)

Acer rubrum (aka: Red maple, Scarlet maple)

Ilex opaca (aka: American holly, Dune holly, Hummock holly, Scrub holly)

Malus domestica (aka: Pyrus pumila, Malus pumila, Apple)

Acer platanoides (aka: Norway maple)

Celtis occidentalis (aka: Common hackberry, Bastard elm, Nettle-tree, Northern hackberry)

Prunus americana (aka: American plum, Goose plum, River plum, Wild plum)

Catalpa speciosa (aka: Northern catalpa, Hardy catalpa, Western catalpa, Cigar tree, Catawba-tree, Bois chavanon)

Rhamnus cathartica (aka: Common buckthorn, European buckthorn, Dahurian buckthorn)

Robinia pseudoacacia (aka: Black locust, False acacia, Yellow locust, White locust, Green locust, Post locust, Falsa acacia, Robinia)

Viburnum prunifolium (aka: Blackhaw, Black haw, Blackhaw viburnum, Sweet haw, Stag bush, Smooth Blackhaw Viburnum, Stagbush, Viburnum bushii)

Vaccinium angustifolium (aka: Lowbush blueberry, Early low-bush blueberry, Low sweet blueberry)

Rubus laciniatus (aka: Cutleaf blackberry, Evergreen blackberry, Slashed blackberry)

Rubus phoenicolasius (aka: Wine raspberry, Japanese wineberry, Wineberry)

Malus ioensis (aka: Bechel crab, Crab apple, Iowa crab, Iowa crab apple, Prairie crab, Prairie crab apple)

Ajuga reptans (aka: Bugle, Blue bugle, Bugleherb, Bugleweed, Carpetweed, Carpet bugleweed, Common bugle, St. Lawrence plant)

Astragalus (aka: Milkvetch, Locoweed, Goat's-thorn)

Rubus idaeus (aka: Raspberry, Black-haired red raspberry, Brilliant red raspberry, American red raspberry, Red raspberry, Smoothleaf red raspberry, Wild raspberry, Wild red raspberry, Grayleaf raspberry)

Rubus parviflorus (aka: Thimbleberry, Western thimbleberry)

Rhus glabra (aka: Smooth sumac, Common sumac, Rocky Mountain sumac, Red sumac, Western sumac, White sumac)

Allium schoenoprasum (aka: Chives)

Brassica napus (aka: Rapeseed)

Sinapis arvensis (aka: Charlock mustard, California rape, Charlock, Corn mustard, Canola, Kaber mustard, Rapeseed mustard)

Gleditsia triacanthos (aka: Honey locust, Honey shucks locust, Common honeylocust, Sweet bean locust)

Aronia melanocarpa (aka: Black chokeberry, Rowan, Mountain Ash, Sorbus)

Prunus serotina (aka: Black cherry, Wild black cherry, Rum cherry, Mountain black cherry, Wild cherry)

Prunus pensylvanica (aka: Pin cherry, Fire cherry, Bird cherry)

Vaccinium corymbosum (aka: Highbush blueberry, High-bush blueberry, Northern highbush blueberry, Tall blueberry, Rabbiteye blueberry, Blue huckleberry, Tall huckleberry, Swamp huckleberry, High blueberry, Swamp blueberry)

Asclepias tuberosa (aka: Butterflyweed, Butterfly Milkweed, Orange Milkweed, Pleurisy Root, Chigger Flower, Canada root, Fluxroot, Indian paintbrush, Indian posy, Orange root, Orange Swallow-wort, Tuber root, Yellow milkweed, White-root, Windroot, Butterfly love)

Tilia americana (aka: American basswood, Basswood, Linden)