Oenothera macrocarpa

Missouri Evening Primrose

Missouri Evening Primrose has huge yellow flowers from late spring through the summer and attractive green foliage . Deep rooted and xeric, this prairie native is a long lived beauty. We grow an especially drought tolerant selection. Drought resistant/drought tolerant plant (xeric).
Zones 4 - 8
Advantages
Deer Resistant
Attract Butterflies
Fragrant
Containers
Groundcover
Native
Rock Gardens
Great for Mass Plantings
Light Requirements
Full Sun
Annual Rainfall
10 to 20"
20 to 30"
30 to 40" (with care)
Mature Plant Size 10" tall 18-24" wide
Bloom Time Summer
Shipping Shipping begins the week of February 25th, 2019 Learn More…
Size Plant - 2.5" Pot
SKU HC014178

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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Regular Price $8.99 Sale $7.19
Per Plant - 2.5" Pot
You save: 21%
In stock
SKU
HC014178

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Details
10" tall x 18-24" wide (seed propagated). This native wildflower is renowned for the huge 4" yellow flowers that open each afternoon and close up the following morning. Long blooming throughout the summer months, it keeps going until it feels it has set enough seed pods to retire for the season. Long-lived, it forms a huge underground tuber to keep itself going from year to year. Evening Primrose cascades nicely over rocks and retaining walls. (Botanists have changed the name for this species from missouriensis to macrocarpa).
More Information
SKU
HC014178
Ships To Canada
No
Common Name
Missouri Evening Primrose
Botanical Name
Oenothera macrocarpa
Zones
4, 5, 6, 7, 8
Light Requirements
Full Sun
Flower Color
Yellow
Height
12 inches
Mature Height
10" tall
Mature Spread
18-24" wide
Bloom Time
Early - Mid Summer, Mid - Late Summer
Bloom Time
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", 30 to 40" (with care)
Advantages
Deer Resistant, Attract Butterflies, Fragrant, Containers, Groundcover, Native, Rock Gardens, Great for Mass Plantings
Ideal Region
Anywhere In The US, Northeast, Midwest, West, Southwest, Pacific Northwest
Native To
North America
Item Package Size
Plant - 2.5" Pot
Planting Guides
Oenothera (Evening Primrose) - a huge genus of biennials and perennials native to the Western hemisphere. Flowers are in shades of yellow, pink and white. Pollinated primarily by hawk moths. Flowers open in the afternoon and close by late morning the next day.

Preferred growing conditions
  • Plant in low fertility ("lean") soil including dry clay, positioned in full sun. Mulch with gravel or not at all.
  • Water regularly the first growing season to establish the plant. Thereafter, infrequent but deep watering is all this plant needs.
  • Deadheading is not needed as these are naturally long blooming species. Fertilize lightly in the fall with Yum Yum Mix.
  • Special comments
  • Oenothera are tap rooted plants and does not like to be transplanted once established. Don't divide as they resent having their roots disturbed.
  • Leave standing over the winter and cut back hard, leaving 2 to 3 inches of stems above ground.
  • O. speciosa 'Rosea' is a showy everblooming species that can spread aggressively and should not be planted into areas where it's enthusiastic nature can be a problem. Deadheaded to reduce reseeding. Dig out suckering roots when spreading too wide.
  • Watch for flea beetles (small metallic green beetles) which can defoliate the plants in late spring/early summer.

  • 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
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Q & A

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