Swamp Milkweed

Asclepias incarnata var. pulchra

Regular price $12.00

Container size:
4.5 in. wide x 5 in. deep / 32 fl. oz.

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Swamp milkweed is one of the best wildlife plants for the garden. Its pink flowers attract pollinators, and its leaves feed the monarch butterfly caterpillar.

  • Easy to grow
  • Showy in flower
  • Monarch host plant


  • 3 to 4 ft. tall and wide 
  • Clump forming habit that doesn't spread
  • Hardy in USDA hardiness zones 5, 6, 7, and 8

Flowering period

In central North Carolina, swamp milkweed flowers for four to six weeks between June and August.

How to grow

Don’t let the name fool you, swamp milkweed is just as happy growing in a moist garden as it is in a swamp. Plants prefer moist, rich soil, but are surprisingly adaptable and can tolerate periodic drought in heavier soil types. Plant in full sun to keep plants compact and make staking unnecessary.

Care and maintenance

Cut down old stems to ground level any time through the winter. Plants in drier soil may need to be watered during periods of drought.

30 second video of spicebush swallowtail butterflies feeding on swamp milkweed flowers

Where to plant

In flower beds, low-lying areas, and at the edges of ponds.

When to plant

Can be planted anytime the ground is not frozen. Plants will grow fast and establish quickly during the heat of summer. 


3 to 4 ft. apart when planting more than one swamp milkweed in a group.

When will my plant flower?

Plants planted before June will bloom during the summer if planted in a well-prepared site and kept watered.

Native habitat and range

Edges of marshes, bogs, and swamps from Nova Scotia to Georgia.

Source and origin

Plants are grown from seeds collected on the edge of a roadside ditch in Alamance County, North Carolina.


Asclepias incarnata variety pulchra differs from variety incarnata in that its leaves are pubescent (hairy) and slightly wider. Plants also tend to be less branched (fewer stems) than variety incarnata.

 State Cost per order
AL, CT, DE, GA, IL, IN, KY, MD, NC, NJ, NY, OH, PA, SC, TN, VA, and WV $12.00
AR, CT, FL, IL, IN, LA, MA, MI MO, MS, NH, RI, VT and WI $14.00
CO, IA, KS, ME, MN, NE, ND, OK, SD, and TX $16.00


Sorry, we can't ship plants outside of the continental United States or to AK, AZ, CA, HI, ID, NM, NV, OR, and WA, due to agriculture restrictions.

Are your plants shipped in their containers?

Yes, all our plants are shipped in their growing containers. The dimensions of the containers are 4.5 inches wide by 5 inches deep or 32 fl. oz.

How long will it take to get my order?

All plants are shipped from our nursery in central North Carolina. When you select the "ship now" option, your order will be shipped within one week.

Can I get my plants shipped at a later date?

Yes, in the shopping cart select the week you would like your order to be shipped on.

What shipping carriers do you use?

USPS Priority Mail and UPS Ground for larger orders.

Do you guarantee your plants?

We guarantee our plants to be healthy, ready for planting, and correctly named. We are not able to guarantee whether a plant will grow in your garden as there are too many circumstances that are beyond our control.

On rare occasions, a plant shipped dormant may fail to emerge from its dormancy. If this happens, please let us know.

If you are concerned about a plant, please contact us within 14 days to let us know. If we can’t help you make it grow, we’ll send you a new plant or issue a refund.


Unfortunately, due to the perishable nature of plants, they can’t be returned for a refund. If your plants arrive damaged or you are unhappy with them, please let us know straight away.

What about sales tax?

We propagate our own plants and are not required to collect North Carolina sales tax.

Where can I find information about your plants?

Here are some FAQ on how we grow plants.