Tradescantia sillamontana

Cobweb Spiderwort




Cobweb Spiderwort (Tradescantia sillamontana) is a fabulous groundcover with cobweb covered foliage and large bright-pink, quarter-sized flowers in mid-summer.

Learn More…

Regular Price: $9.99

Sale $8.99

Per Plant - 5" deep pot You save: 10%
Zones 6 - 10
Deer Resistant
Deer Resistant
Rabbit Resistant
Rabbit Resistant
Good for Containers
Light Requirements
Full Sun
Full Sun
Annual Rainfall
10 to 20"
20 to 30"
30 to 40"
Bloom Time Early to mid summer
Shipping Shipping begins in late February based on ground temperatures, warmest zones first. More shipping info Learn More…
Size Plant - 5" deep pot


Cobweb Spiderwort (Tradescantia sillamontana) is a great groundcover in sun or shade. Spreading slowly with thick, finger-like roots, it forms an attractive mat of white cobweb-covered leaves. In mid-summer it suddenly comes into bloom with a month-long display of bright pink flowers. A rare plant native to the Sierra Madre mountains of northeastern Mexico.
Common Name Cobweb Spiderwort
Botanical Name Tradescantia sillamontana
Zones 6, 7, 8, 9, 10
Light Requirements Full Sun
Flower Color Pink
Mature Height 6-8" tall
Mature Spread 16-20" wide
Bloom Time Early to mid summer
Ships As Potted Plant
Evergreen Yes
Native Yes
Planting Time Spring / Summer, Fall
Soil Type Clay Soil, Sandy Soil, Average Soil, Compost Enriched Garden Loam Soil, Low Fertility Soil, Well-Drained Soil
Soil Moisture Average, Drought Resistant / Waterwise
Amount of Rain 10 to 20", 20 to 30", 30 to 40"
Advantages Deer Resistant, Rabbit Resistant, Good for Containers, Evergreen
Ideal Region Coastal California, Southwest, West, Pacific Northwest
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada No

Planting Guides

Tradescantia (Spiderwort) is a genus of herbaceous perennial plants in the Western Hemisphere (New World) in temperate and subtropical areas.

Preferred growing conditions:
  • Plant in most soil types including clay.
  • Best positioned in a full to partial shade locations.
  • Mulch with common mulch materials in dry Western climates. Leave un-mulched in moister Eastern climates.
  • Water regularly the first growing season to establish the plant. Most species and varieties like moderately moist soil and should receive regular irrigation in arid climates. Rainfall is generally sufficient in moist Eastern climates.
  • Deadheading is not needed.
  • Fertilize lightly in the fall with a half and half mix of Yum Yum Mix and good quality compost.
  • Special comments:
  • Plants are generally morning bloomers and close in the heat of afternoon on sunny days.
  • If plants become scraggly after blooming is done, cut back to the ground and they will re-grow healthy foliage in late summer.
  • Cut back plants in late fall. If cut back during the previous summer, wait until mid-spring to cut plants back to the ground.
  • Tradescantia sillamontana is a xeric, slow growing groundcover that grows on succulent underground roots. The plants can be divided in mid-spring if additional plants are desired. Otherwise leave undisturbed. Selectively cut back any stems with winter kill, but don't cut back the entire plant.

  • View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.


Plant Shipping: Buy now and we will ship your order at the ideal planting time for your region. Spring-Planted Perennial and Bulb orders will ship from February 27-June 30, warmest zones first.

Most plant and bulb orders arrive within 2-6 days, or less, of leaving our greenhouses in Colorado. This prompt delivery is provided without additional express charges.

Grass Plugs Will ship at planting time in spring, beginning in late February.

Wildflower Seed & Grass Seed Orders ship within 2-3 days.

Standard shipping costs are $4.99 and up, depending on the size of the order.

Make Fast Even Faster: For ‘Rush’ same week delivery, please call customer service at 800-925-9387.

More Shipping Info

Reviewsby PowerReviews


by PowerReviews
High Country GardensTradescantia sillamontana

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

Displaying review 1

Back to top


Rabbits couldn't resist it.


from Las Vegas NV

About Me Avid Gardener

Verified Reviewer


  • Attractive
  • Healthy


  • Pests & Disease

Best Uses

  • Garden

Comments about High Country Gardens Tradescantia sillamontana:

The plant was beautiful and a really nice size when I received it but rabbits reduced it to nothing within a few days. Rabbits also occasionally eat my purple heart plants which are related to this plant, but rabbits never do more than a little damage to the purple heart. I figured this fuzzy species would be better than purple heart but the rabbits like it better, it seems. If I were to grow it again, it would be in a pot where rabbits couldn't reach it. I didn't have the plant long enough to know how it would do in the summer heat.

  • Primary use:
  • Personal

Displaying review 1

Back to top

Q & A

Suggested Companion Plants:

USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

Find Your Planting Zone:

Enter your Zip Code to find your USDA Planting Zone

You are using an out-of-date browser. You will still be able to shop, but some functionality may not work unless you update to a modern browser. Update My Browser


Please wait...

Item added to your cart

has been added to your cart.