FlowersButterfly Weed
Asclepias tuberosa
Butterfly weed is a native perennial with bright orange flower clusters that draw butterflies. It grows from seed in full sun, but plants usually take two to three years to bloom.
How to grow butterfly weed
Side by side
Pick two or three seeds to see how they grow, side by side: sprouting, spacing, sun, water, frost and pet safety in one table.

Comparing Butterfly Weed vs. California Poppy
The comparison
| Fact | ![]() | ![]() |
|---|---|---|
| Difficulty | Moderate | Easy |
| Life cycle | Perennial | Annual |
| Germination time | 14–21 days | 14–21 days |
| Germination temperature | 18–21 °C64–70 °F | 16–18 °C61–64 °F |
| Sowing depth | 6 mm¼ in | 6 mm¼ in |
| Sun | Full sun, partial shade | Full sun |
| Water | Low | Low |
| Containers | Not yet verified | Yes |
| Links |
Up close
What each one is, in a few lines, with the full growing guide one click away.
FlowersAsclepias tuberosa
Butterfly weed is a native perennial with bright orange flower clusters that draw butterflies. It grows from seed in full sun, but plants usually take two to three years to bloom.
How to grow butterfly weed
FlowersEschscholzia californica
A bright orange, drought-tolerant annual poppy that needs full sun and well-drained soil. Seeds are sown outdoors after the last spring frost, and the plant is easy to grow.
How to grow california poppyKeep comparing
Add a third seed, or swap one for a close relative from the same category.


Butterfly Weed vs. California Poppy vs. African DaisyAdd african daisy as a third

Butterfly Weed vs. California Poppy vs. African MarigoldAdd african marigold as a third

Butterfly Weed vs. California Poppy vs. AgeratumAdd ageratum as a third
Butterfly Weed vs. African DaisyButterfly Weed against another flower
California Poppy vs. African DaisyCalifornia Poppy against another flower
Butterfly Weed vs. African MarigoldButterfly Weed against another flowerThe table, row by row
Every row is a fact from each seed's own profile, lined up so the differences stand out.
Germination time and temperature
How many days the seeds take to sprout, and the temperature range they sprout in.
Sowing depth and spacing
How deep to sow each seed and how far apart the plants should grow. “On the surface” means the seed isn't covered.
Days to maturity and life cycle
How long until the plant is ready, counted from sowing or from transplanting (each value says which). Annuals live one year, biennials two, perennials longer.
Sun and water
Full sun means 6 or more hours of direct sun a day, partial shade a few hours. Water needs are rated low, moderate or high.
Containers, frost tolerance and soil pH
Whether it grows in a pot, with the smallest pot when it's known. Frost tolerance runs from tender (no frost) to hardy. Soil pH 7 is neutral.
Toxicity to cats and dogs
Whether the plant is toxic to cats and dogs.
Quick wins
Days from sowing until the first shoots appear, in good conditions.
Pet friendly
Listed as non-toxic to both cats and dogs. Each seed's page has the details.
Not safe for pets: borage, buckwheat, caraway, carnation and 14 more.
Comparing
Each seed's page explains how to grow it from seed, with facts researched and reviewed by our editors.