Seashore Mallow

Kosteletzkya pentacarpos

Regular price $14.00

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

Seashore mallow is an underused native plant that attracts hummingbirds and thrives in wet, poorly-drained soil where other plants will fail.   

  • Easy to grow
  • Masses of soft pink flowers in summer
  • Its hairy stems and leaves are resistant to deer browsing


  • 4 to 7 ft. tall and wide
  • Stems and leaves die to the ground in the fall and come up again in mid-spring
  • Deer generally avoid the hairy stems and leaves of seashore mallow
  • Hardy in USDA hardiness zones 7, 8, 9, and 10

Flowering period

In central North Carolina, seashore mallow comes into flower mid-to-late summer and bloom for around four to six weeks.

How to grow

Grow seashore mallow in plenty sun to promote compact growth and lots of flowers. Plants thrive in rich, moist soil, but are adaptable and can grow in shallow standing water and tolerate periodic drought in clay-based soil.

Care and maintenance

Old flowering stems can be cut back to the ground level in late winter or before growth emerges in spring. Water during extended droughts to keep plants looking good and producing lots of flowers.

Where to plant

Plant seashore mallow in flower beds, edges of ponds and other water features.

When to plant

Anytime throughout the growing season. Keep plants well-watered until they get established.

When will my plant flower?

Plants purchased and planted in spring and early summer will flower in late summer if planted in a well-prepared site and kept watered.

Native habitat and range

Fresh to brackish tidal marshes from Delaware to southern Florida.

Source and origin

Plants are grown from seeds off stock plants at the nursery. The original plants were grown from seeds collected at the edge of a brackish marsh in Pender County, North Carolina.

Want to learn more? Here is article we wrote on seashore mallow.

 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.