Eriogonum umbellatum Gentle Giant

Gentle Giant Sulfur Buckwheat

 

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Gentle Giant Sulphur Buckwheat (Eriogonum umbellatum 'Gentle Giant') is an especially large-growing selection of the western native E. umbellatum, blooming with a profusion of bright yellow flat-topped flowers in early summer.

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Zones 4 - 8
Advantages
Deer Resistant
Deer Resistant
Bee Friendly
Bee Friendly
Native
Evergreen
Evergreen
Light Requirements
Full Sun
Full Sun
Annual Rainfall
1020
10 to 20"
Ideal Region
Only in Western US
Bloom Time Early to mid summer
Shipping Buy now and we'll ship your order during the ideal planting time for your region. Orders with this item will begin shipping the week of Feb. 29 and continue through mid-June. Expected ship week will display at checkout after you enter your zip code. More shipping info. Learn More…
Size Plant - 5" deep pot
SKU HBLXH51

Details

Gentle Giant Sulphur Buckwheat (Eriogonum umbellatum 'Gentle Giant') blooms with a profusion of bright yellow flat-topped flowers in early summer. An especially large-growing selection of the western native E. umbellatum, this long-lived shrubby perennial is an excellent choice for planting in the hot, dry, poor soil. It will attract numerous native bee species and other beneficial insects. This is an especially attractive companion plant for pairing with English and French hybrid lavenders.
SKU HBLXH51
Common Name Gentle Giant Sulfur Buckwheat
Botanical Name Eriogonum umbellatum Gentle Giant
Zones 4, 5, 6, 7, 8
Light Requirements Full Sun
Flower Color Yellow
Mature Height 18-24" tall
Mature Spread 24-28" wide
Bloom Time Early to mid summer
Ships As Potted Plant
Planting Time Spring / Summer, Fall
Soil Moisture Drought Resistant / Waterwise
Amount of Rain 10 to 20"
Advantages Deer Resistant, Bee Friendly, Native, Evergreen
Special Groups High Country Gardens Exclusive, High Country Gardens Introduction
Ideal Region Western Only, Suitable Above 7000 ft, Southwest, West, Pacific Northwest
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada No

Planting Guides

Growing Eriogonum (Buckwheat)
Eriogonum (Buckwheat) is a large genus of mostly Western North American wildflowers that are often shrub-like with woody stems. They are very important plants for habitat creation in our gardens.
Preferred growing conditions:

Preferred growing conditions:

  • Plant in "lean" sandy, gravelly or garden loam soils. Avoid clay. Place in full sun.
  • Mulching is beneficial in the arid Western US using crushed gravel, pine needles or other coarse, non-water absorbent mulch material.
  • Irrigate regularly during their first growing season to establish the plants. Infrequent, deep watering is fine from the second growing season and beyond. They won't need much, if any extra water in the Eastern US.
  • Fertilize lightly in fall with Yum Yum Mix/compost blend.

Special comments:

  • Don't deadhead. Many species have very showy seed heads that are lost when plants are deadheaded. Seeds are also utilized by many insects and animals for food.
  • Most species are actually shrub-like and should not be cut back or divided. A light top shear in early to mid-spring to remove the previous year's flowers stems is all that is needed

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. Expected ship week will display on the cart at checkout after you enter your zip code. Spring-Planted Perennial and Bulb orders will ship from Feb 25 through mid-June, 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

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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:

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