Calylophus serrulatus

Dwarf Sundrops

This xeric wildflower, native to the western Great Plains, blooms most of the summer with a profusion of bright yellow flowers. This is a tough colorful species that gently re-seeds itself when happy. Drought resistant/drought tolerant plant (xeric).
Zones 4 - 9
Advantages
Extended Bloom Time (more than 4 weeks)
Good Rockgarden or alpine plant
Deer Resistant
Attract Butterflies
Bee Friendly
Groundcover
Native
Low Maintenance
Multiplies / Naturalizes
Light Requirements
Full Sun
Annual Rainfall
10 to 20"
20 to 30"
30 to 40" (with care)
Mature Plant Size 6-8" tall 15" wide
Bloom Time Late spring to late summer
Shipping Shipping begins the week of February 25th, 2019 Learn More…
Size Plant - 2.5" Pot
SKU HC014487

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:

You have entered an invalid zip code, please check your zip code and try again.

Product is Out of Stock
$6.99
Per Plant - 2.5" Pot
Out of stock
SKU
HC014487

Video

 
Details
6-8" tall x 15" wide (cutting propagated). A little known native from the short grass prairies of the western Great Plains. But not for long! A heavy bloomer from late spring through the summer, this tough plant will be the star of your xeriscape. Dwarf Sundrops likes a lean, well-drained soil and a good shearing before the growing season in late spring to keep it looking tidy and loaded with flowers. A fine companion plant for Nepeta and Penstemon.
More Information
SKU
HC014487
Ships To Canada
No
Common Name
Dwarf Sundrops
Botanical Name
Calylophus serrulatus
Zones
4, 5, 6, 7, 8, 9
Light Requirements
Full Sun
Flower Color
Yellow
Height
12 inches
Mature Height
6-8" tall
Mature Spread
15" wide
Bloom Time
Late Spring - Early Summer, Early - Mid Summer, Mid - Late Summer
Bloom Time
Late spring to late summer
Ships As
Potted Plant
Planting Time
Spring / Summer, Fall
Soil Type
Low Fertility Soil, Well-Drained Soil
Soil Moisture
Drought Resistant / Waterwise
Amount Of Rain
10 to 20", 20 to 30", 30 to 40" (with care)
Advantages
Extended Bloom Time (more than 4 weeks), Good Rockgarden or alpine plant, Deer Resistant, Attract Butterflies, Bee Friendly, Groundcover, Native, Low Maintenance, Multiplies / Naturalizes
Ideal Region
Western Only
Native To
North America
Item Package Size
Plant - 2.5" Pot
Planting Guides

Tips On Growing Calylophus (Sundrops)

Calylophus (Sundrops) is a showy genus of native western species.  Closely related to Oenothera, but these perennials are day bloomers.

Preferred growing conditions:

  • Plant in fast draining sandy, rocky or light loam soils. Some species (C. hartwegii) are fine with clay in arid climates.
  • All need full sun conditions.
  • Mulch with gravel or other coarse texted non-bark mulch.
  • Keep regularly watered for the first growing season to establish the roots. Thereafter, infrequent but deep watering is preferred.
  • Fertilize lightly in fall with Yum Yum Mix/compost blend.

Special comments:

  • Deadheading is not needed as these plants are naturally long blooming. Cut back hard in early to mid-spring to a height of 2 to 3 inches.

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.
Shipping
ZoneShipping Status
Zone 2Shipping begins the week of May 20th, 2019
Zone 3Shipping begins the week of May 20th, 2019
Zone 4Shipping begins the week of May 20th, 2019
Zone 5Shipping begins the week of April 29th, 2019
Zone 6Shipping begins the week of April 15th, 2019
Zone 7Shipping begins the week of March 25th, 2019
Zone 8Shipping begins the week of March 4th, 2019
Zone 9Shipping begins the week of February 25th, 2019
Zone 10Shipping begins the week of February 25th, 2019
Reviews
Q & A

Suggested Companion Plants: