Longleaf buckwheat
Eriogonum longifolium var. longifolium
Last reviewed: October 2026
Longleaf buckwheat is a drought tolerant forb that thrives in full sun on dry prairies and rocky ground, blooming from July through October across the southern Great Plains.
Toxicity unknown
Longleaf buckwheat (Eriogonum longifolium var. longifolium) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
12"–72" H × 12"–24" W
Bloom
Jul, Aug, Sep, Oct
Native to
TX, OK, KS
Pollinators
bees, butterflies
Before you buy
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Browse plants for this ecoregion
An upright perennial forb with a basal rosette of long, narrow gray-green leaves and tall, branching flower stalks topped with small clustered white to pale pink flowers. Blooms over a long summer-into-fall season and tolerates poor, rocky, well-drained soils in full sun with low water once established.
Growing Longleaf buckwheat
Grow Longleaf buckwheat in full sun and low water. Mature plants reach 12 to 72 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Longleaf buckwheat is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.
Works well in: front yard, mid zone, foundation.
- can look sparse or leggy between bloom flushes
Wildlife value
Long summer bloom period supplies nectar and pollen for a range of bees and butterflies during a season when many other flowers have finished.
Common questions
- When does longleaf buckwheat bloom?
- Longleaf buckwheat typically flowers from July through October, with small clustered blooms held above basal leaves on upright stems.
- What growing conditions does longleaf buckwheat need?
- This plant does best in full sun with low water once established, favoring well drained soils similar to the prairies and open rangeland where it is commonly found.
- What pollinators visit longleaf buckwheat flowers?
- Bees and butterflies regularly visit the flowers of longleaf buckwheat for nectar and pollen during its summer and fall bloom period.
- How much water does longleaf buckwheat need?
- Longleaf buckwheat is adapted to low moisture conditions and generally does not need supplemental watering once it is established in the right soil and sun exposure.
- Is Longleaf buckwheat HOA-friendly?
- Longleaf buckwheat is generally an HOA-friendly choice in the right placement, with low maintenance.
These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Longleaf buckwheat? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.