Slim Milkweed
Asclepias linearis
Last reviewed: October 2026
Slim Milkweed is toxic to dogs and cats.
Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-08-15). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435 and your veterinarian's emergency line.
Pollinator Patch flags toxic plants so you can choose a pet-safe native alternative for your yard.
Native swaps for a yard with pets
Slim Milkweed is listed as toxic to dogs by the ASPCA Animal Poison Control Center. These natives fill a similar role in a planting and are not on the ASPCA toxic plant list for dogs or cats. Each plant's page carries its dated record.
Light
full sun
Water
low
Size
12"–24" H × 12"–12" W
Bloom
Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
Native to
TX
Pollinators
butterflies, bees
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 459 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaPicture natives in your own yard
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Browse plants for this ecoregion
Slim Milkweed is a graceful native perennial with narrow, linear leaves and small white flowers that bloom from spring through fall. This drought-tolerant plant maintains a compact, upright form and requires minimal care once established.
In an HOA neighborhood
Slim Milkweed is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
Wildlife value
Essential host plant for monarch butterfly caterpillars and provides nectar for various butterflies and bees. The long blooming season offers consistent pollinator support throughout most of the growing year.
Common questions
- How much sun does Slim Milkweed need?
- Slim Milkweed grows best in full sun conditions.
- When does Slim Milkweed bloom?
- Slim Milkweed blooms in March, April, May, June, July, August, September, October, and November.
- Where is Slim Milkweed native?
- Slim Milkweed (Asclepias linearis) is native to TX, per vouchered herbarium specimen records and regional native plant society lists.
- Is Slim Milkweed toxic to dogs?
- Yes. Slim Milkweed is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- Is Slim Milkweed toxic to cats?
- Yes. Slim Milkweed is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- What pollinators does Slim Milkweed attract?
- Slim Milkweed draws butterflies and bees.
- Is Slim Milkweed HOA-friendly?
- Slim Milkweed is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Pollinator Patch flags toxic plants like Slim Milkweed and shows pet-safe natives for your ecoregion instead.