Calylophus hartwegii High Plains Yellow

High Plains Yellow Sundrops

Exclusive. 'High Plains Yellow' Sundrops is a long blooming wildflower from the western Great Plains that withstands heat, drought and rugged growing conditions. Drought resistant/drought tolerant plant (xeric).
Zones 5 - 9
Advantages
Extended Bloom Time (more than 4 weeks)
Good Rockgarden or alpine plant
Deer Resistant
Attract Butterflies
Groundcover
Native
Great for Mass Plantings
Light Requirements
Full Sun
Annual Rainfall
10 to 20"
20 to 30"
Mature Plant Size 4-6" tall 12-15" wide
Bloom Time Late spring to late summer
Size No
SKU HC016105

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).

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As low as $7.99 Sale $6.39
In stock
SKU
HC016105

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Details
4-6" tall x 12-15" wide. A new, long blooming wildflower introduction collected from the rugged, high dry plains of eastern NM, ‘High Plains Yellow’ Sundrops is well adapted to heat, cold, wind, and drought. This prairie native thrives in harsh conditions. Beginning in late spring, colorful, red speckled buds burst open into large, brilliant yellow flowers. It’s a superb companion plant for Lavender.
More Information
SKU
HC016105
Ships To Canada
No
Common Name
High Plains Yellow Sundrops
Botanical Name
Calylophus hartwegii High Plains Yellow
Zones
5, 6, 7, 8, 9
Light Requirements
Full Sun
Flower Color
Yellow
Height
Under 6 inches
Mature Height
4-6" tall
Mature Spread
12-15" 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
Sandy Soil, Clay Soil, Average Soil
Soil Moisture
Drought Resistant / Waterwise
Amount Of Rain
10 to 20", 20 to 30"
Advantages
Extended Bloom Time (more than 4 weeks), Good Rockgarden or alpine plant, Deer Resistant, Attract Butterflies, Groundcover, Native, Great for Mass Plantings
Special Groups
High Country Gardens Exclusive, High Country Gardens Introduction
Ideal Region
West, Western Only, Southwest, Hot Desert
Native To
North America
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: