According to observations of naturalists and beekeepers.
Where are you?
In North America, Halberd willow occurs in northern Alaska, the mountains of central Alaska, including the Alaska Range, and extreme northwestern Canada. It is most common near the Arctic Coast. Halberd willow also occurs in northern Europe and Asia, southward in the mountains of both.
This plant is present in at least 3 states/provinces in this country.
Halberd willow is a native, multibranched, spreading shrub typically between 3 and 6 feet (1-2 m) tall. It has small, simple, alternate, deciduous leaves. Male and female flowers occur on separate plants in 0.75- to 2-inch-long (1.5-5 cm), erect catkins. Halberd willow has a remarkable characteristic of plasticity; its growth form adapts readily to a wide variety of habitats.
Halberd willow flowers in late spring or midsummer (May-June). The fruit ripens soon after flowering, followed by seed dispersal in late July and early August.
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 scouleriana (aka: Scouler's willow, Upland willow)
Acer circinatum (aka: Vine maple)
Malus fusca (aka: Oregon crab, Oregon crab apple, Pacific crab apple, Western crab apple)
Rubus spectabilis (aka: Salmonberry)
Salix arbusculoides (aka: Littletree willow)
Salix bebbiana (aka: Bebb willow, Beak willow, Beaked willow, Long-beaked willow, Diamond willow, Chaton, Petit Minou, Smooth Bebb willow)
Salix planifolia (aka: Diamondleaf willow, Planeleaf willow)
Salix pulchra (aka: Tealeaf willow, Flatleaf willow, Flat-leaved willow, Paneleaf willow, Thin red willow)
Salix hastata (aka: Halberd willow)
Astragalus (aka: Milkvetch, Locoweed, Goat's-thorn)
Salix alaxensis (aka: Feltleaf willow, Alaska willow)
Salix richardsonii (aka: Richardson's willow, Woolly willow)
Allium schoenoprasum (aka: Chives)
Brassica napus (aka: Rapeseed)
Sinapis arvensis (aka: Charlock mustard, California rape, Charlock, Corn mustard, Canola, Kaber mustard, Rapeseed mustard)
Prunus virginiana (aka: Chokecherry, Western chokecherry, Common chokecherry, Black chokecherry)
Salix myrtillifolia (aka: Blueberry willow, Low blueberry willow, Tall blueberry willow)
Salix fuscescens (aka: Alaska bog willow)
Salix glauca (aka: Grayleaf willow, Gray willow, Gray-leaved willow)
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)
Brassica rapa (aka: Field mustard, Common mustard, Wild mustard, Wild turnip, Forage turnip, Wild rutabaga, Birdsrape mustard, Rape mustard)
Echium vulgare (aka: Viper's bugloss, Blueweed, Blue thistle)
Chamaenerion angustifolium (aka: Fireweed, Great willowherb, Rosebay willowherb, Saint Anthony's Laurel, French-willow)
Borago officinalis (aka: Borage, Starflower, Common borage, Cool-tankard, Tailwort)
Cirsium arvense (aka: Creeping Thistle, Canada thistle, Field thistle, California thistle, Lettuce from hell thistle, Corn thistle, Cursed thistle, Green thistle, Hard thistle, Perennial thistle, Prickly thistle, Small-flowered thistle, Way thistle, Stinger-needles)