The illustrated growing guide
Common Milkweed
Asclepias syriaca / tuberosa
Family Apocynaceae
Est. zones 3-9
No milkweed, no monarchs — full stop. Tuberosa for tidy beds, incarnata for rain gardens, syriaca where a fragrant wild patch can run. The orange aphids are cosmetic; the chewed leaves are the mission statement.
Full Sun
Low water
Fast growth
Deer-resistant
Native to North America
Attracts butterflies
Attracts bees
From the print shop
Growing common milkweed? Hang it.
Our Wildflowers Vol. 2 collection carries common milkweed — Asclepias syriaca, print Nº 2, “Milkweed.”
16 designsfrom $21.99white or black groundmatte poster, unframed
I
Overview
Will common milkweed suit your garden, and what goes wrong.
Will it thrive where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what common milkweed actually needs.
Hardy inZones 3-9Common Milkweed at a glance
Common common milkweed problems
- Oleander Aphids (orange — blast, don't spray; monarch cats share the plant)
- Milkweed Beetles (harmless natives)
- Few
II
Growing
Light, water, soil, propagation and the season’s jobs.
How to grow common milkweed: light, water & soil
How to plant & propagate common milkweed
When to spray common milkweed
Growing season. NEVER insecticide — the entire point is caterpillars eating it.
III
The year
What common milkweed asks for, month by month.
The common milkweed year, month by month
BloomPruneWhat each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
- Prune — shape it now — cuts heal cleanly and structure is visible.
The common milkweed year as text
- Jan pruning
- Feb pruning
- Mar pruning
- Apr pruning
- May pruning
- Jun bloom
- Jul bloom
- Aug bloom
- Sep quiet month
- Oct quiet month
- Nov quiet month
- Dec pruning
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
IV
Ecology & uses
What it does for the garden, and what it is grown for.
Common Milkweed in the garden system
- Herbaceous layer perennial
- Nectary/insectary
- Hosts Monarch butterfly (its ONLY host); also queen butterfly
What common milkweed is grown for
⚠ Toxic if eatenSap toxic — that's the monarch's defense; not a snacking plant
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
V
Cultivars
Named varieties of common milkweed, ruled as a catalogue.
Best common milkweed varieties & cultivars
A. tuberosa (orange, tidy, clay-tolerant 'Butterfly Weed'); A. incarnata 'Ice Ballet' (swamp, pink, garden-mannered); syriaca (the wild patch)
VI
Sources & plant ID
Where the care distinctions come from, and how the plant is filed.
Research basis
Sources behind this profile
No extension citations are attached to common milkweedyet. The care figures below come from the library's own catalogue rather than a traced primary source.
Plant ID
VII
Where to buy
Third-party nurseries — not Story Thyme Farms.
Third-party nurseries, not Story Thyme Farms. Prices are theirs.
Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.
VIII
Questions
Common Milkweed questions, answered straight.
Do deer eat common milkweed?
Rarely — common milkweed is considered deer-resistant, which makes it one of the safer unfenced choices in deer country. Hungry deer in a hard winter test every rule, but it's a low-risk pick.
Is common milkweed safe for kids and pets?
No — treat it as toxic if eaten. Sap toxic — that's the monarch's defense; not a snacking plant Site it accordingly if children or pets roam the garden. This is general reference, not medical or veterinary advice — call a vet or poison control if something has actually been eaten.
How do you propagate common milkweed?
Division or seed.
IX
Elsewhere
Where common milkweed sits in the library.
Ironweed
Cup Plant
Helen's Flower (Sneezeweed)
Turtlehead