Swamp Milkweed
Asclepias incarnata
A bee plant first and foremost — feeds native bees and butterflies; cold-hardy to zone 3, it flowers in Jul and Aug.
- Full–part sun
- Average–wet
- 3–4 ft
- Blooms Jul–Aug
The native flowers that feed honey bees, bumblebees, and the hundreds of solitary native bees most gardeners never notice. Every species here is genuinely native to Colorado and the wider flora of the Mountain West and hardy through zones 3–6 — proven performers for Colorado's semi-arid, cold winters, high sun climate across Southern Rockies & High Plains, not a generic list. Local standouts include Swamp Milkweed and Common Yarrow. Most of our native bees are solitary and unfussy, but they depend on a steady supply of pollen-rich, single (not double) flowers. Open daisy and umbel shapes are easiest for short-tongued bees, while tubular flowers reward the long-tongued bumblebees. Skip pesticides entirely and leave some bare, undisturbed ground and pithy stems where ground- and stem-nesting bees raise their young.
Each one native to your region and hardy in zones 3–6 · see this collection in other states.
Asclepias incarnata
A bee plant first and foremost — feeds native bees and butterflies; cold-hardy to zone 3, it flowers in Jul and Aug.
Achillea millefolium
Bee fuel — pollen-rich, single flowers — feeds the specialist bees that depend on it, along with butterflies and native bees — white (wild form) flowers, blooming from May to Aug.
Asclepias tuberosa
One the bees find first — feeds native bees and butterflies; spreading 12–18 in, it blooms Jun through Aug.
Aquilegia canadensis
A bee plant first and foremost — feeds the specialist bees that depend on it, along with hummingbirds and native bees — for rocky and loam ground, blooming from Apr to Jun.
Zizia aurea
A bee plant first and foremost — feeds the specialist bees that depend on it, along with butterflies and native bees — for clay and loam ground, blooming from Apr to Jun.
Monarda fistulosa
A bee plant first and foremost — feeds the specialist bees that depend on it, along with hummingbirds and butterflies — happy in clay, rocky, and loam soil, blooming from Jun to Aug.
Aquilegia formosa
Bee fuel — pollen-rich, single flowers — feeds native bees and hummingbirds; red & gold flowers, it blooms Apr through Jul.
Amelanchier canadensis
A bee plant first and foremost — feeds native bees and butterflies; cold-hardy to zone 3, it flowers in Apr and May.
Geum triflorum
Bee fuel — pollen-rich, single flowers — feeds the specialist bees that depend on it; cold-hardy to zone 3, it flowers in Apr and May.
Agastache foeniculum
Bee fuel — pollen-rich, single flowers — feeds native bees, hummingbirds, and butterflies; cold-hardy to zone 4, it blooms Jun through Sep.
Fallugia paradoxa
One the bees find first — feeds native bees; hardy in zones 5–9, it blooms Apr through Sep.
Liatris spicata
Pollen-rich and bee-friendly — feeds the specialist bees that depend on it, along with butterflies and native bees; magenta flowers, it flowers in Jul and Aug.
Berlandiera lyrata
Bee fuel — pollen-rich, single flowers — feeds native bees and butterflies; good through zone 10, it blooms May through Sep.
Coreopsis lanceolata
One the bees find first — feeds native bees and butterflies — 1.5–2 ft tall, blooming from May to Jul.
Rudbeckia hirta
One the bees find first — feeds native bees and butterflies, cold-hardy to zone 3 and flowering from Jun to Sep.
Symphyotrichum oblongifolium
Pollen-rich and bee-friendly — feeds native bees and butterflies; 1.5–2.5 ft tall, it blooms Sep through Nov.
Symphyotrichum novae-angliae
Pollen-rich and bee-friendly — feeds the specialist bees that depend on it, along with butterflies and native bees — reaching 3–5 ft, blooming in Sep and Oct.
Gaillardia aristata
Pollen-rich and bee-friendly — feeds native bees and butterflies — red & gold flowers, blooming from Jun to Sep.
Silphium perfoliatum
Pollen-rich and bee-friendly — feeds native bees and butterflies — yellow flowers, blooming from Jul to Sep.
Penstemon eatonii
A bee plant first and foremost — feeds native bees and hummingbirds — cold-hardy to zone 4, blooming from Mar to May.
Cephalanthus occidentalis
Pollen-rich and bee-friendly — feeds native bees, hummingbirds, and butterflies, for clay and loam ground and flowering from Jun to Aug.
Helianthus maximiliani
One the bees find first — feeds native bees and butterflies, hardy in zones 3–9 and flowering from Aug to Oct.
Cercis canadensis
A bee plant first and foremost — feeds the specialist bees that depend on it, along with butterflies and native bees; good through zone 9, it flowers in Mar and Apr.
Pulsatilla patens
One the bees find first — feeds the specialist bees that depend on it; hardy in zones 3–7, it flowers in Mar and Apr.
24 more also qualify: Foxglove Beardtongue, Obedient Plant, Prairie Blazing Star, Culver's Root, Purple Coneflower, Great Blue Lobelia, Showy Goldenrod, Spotted Joe-Pye Weed, Rocky Mountain Penstemon, Red-Twig Dogwood, Rattlesnake Master, Oregon Grape, Common Milkweed, Bearberry, Ninebark, Stiff Goldenrod, Common Boneset, Showy Milkweed, Purple Prairie Clover, New Jersey Tea, Blue Vervain, Fragrant Sumac, American Elderberry, Compass Plant.
Seed packets, plugs, and starter plants for many of these species ship to your door.
Browse on AmazonSome links here are affiliate links — we may earn a small commission at no extra cost to you. The surest source of locally-adapted stock is a native-plant nursery or a native plant society sale in your area.