Eriogonum umbellatum Gentle Giant
Gentle Giant Sulfur Buckwheat
DetailsGentle 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.
|Common Name||Gentle Giant Sulfur Buckwheat|
|Botanical Name||Eriogonum umbellatum Gentle Giant|
|Zones||4, 5, 6, 7, 8|
|Light Requirements||Full Sun|
|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|
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.
- 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.
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.
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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).
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