Calylophus serrulatus

Dwarf Sundrops

Yellow Calylophus serrulatus, Calylophus serrulatus, Dwarf Sundrops View Larger Image

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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).

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Zones 4 - 9
Advantages
Native
Extended Bloom Time (more than 4 weeks)
Low Maintenance
Light Requirements
Full Sun
Full Sun
Annual Rainfall
Drought Resistant / Waterwise
10 to 20", 20 to 30", 30 to 40" (with care)
Ideal Region
Only in Western US
Bloom Time Late spring to late summer
Shipping Shipping begins in late February based on ground temperatures, warmest zones first. More shipping info Learn More…
Size Plant - 2.5" deep pot
SKU 28935

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.
SKU 28935
Common Name Dwarf Sundrops
Botanical Name Calylophus serrulatus
Zones 4, 5, 6, 7, 8, 9
Light Requirements Full Sun
Flower Color Yellow
Mature Height 6-8" tall
Mature Spread 15" wide
Bloom Time Late spring to late summer
Ships As Potted Plant
Native Yes
Planting Time Spring / Summer
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 Native, Extended Bloom Time (more than 4 weeks), Low Maintenance
Ideal Region Western Only
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada No

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

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 orders will arrive within 3-4 days, or less, of leaving our greenhouses. This prompt delivery is provided without additional express charges.

Grass Plugs Will ship at planting time in spring 2017, 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

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High Country GardensCalylophus serrulatus
 
4.5

(based on 2 reviews)

Ratings Distribution

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Reviewed by 2 customers

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5.0

Can't seem to find this plant anywhere.

By 

from Albuquerque

Comments about High Country Gardens Calylophus serrulatus:

I love this plant but have not been able to find it anywhere for several years. The one I have blooms all summer long and is very pretty.

 
4.0

Doing well!

By 

from Denver, CO

About Me Getting Started

Verified Reviewer

Pros

  • Accurate Instructions
  • Attractive
  • Hardy
  • Healthy

Cons

    Best Uses

    • Garden
    • Outdoors

    Comments about High Country Gardens Calylophus serrulatus:

    Planted this little guy a couple of years ago as filler/weed barrier in two gardens, one in full sun, the other shade in the morning and sun in the afternoon. Both spots are doing well and the first year the plant starting spreading as i expected - not gang busters, but slow and steady while maintaining a healthy look. The spreading was slower than I had hoped it would continue this year, but probably to the very unusually wet spring we had in Denver this year (2015). Still looks great though, even in a garden that received inches more moisture than it is designed for.

    • Primary use:
    • Personal

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    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

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