Engelmann oak
Quercus engelmannii
Last reviewed: October 2026
Engelmann oak (Quercus engelmannii) is a perennial tree native to CA. It blooms in March and April.
Toxicity unknown
Engelmann oak (Quercus engelmannii) 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
480"–720" H × 480"–720" W
Bloom
Mar, Apr
Native to
CA
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 460 programs across 44 states, each with a link to the provider and the date we last checked it.
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Browse plants for this ecoregion
Broad-canopied oak with a picturesque spreading form and leathery, blue-green leaves that persist through much of the year. Found on dry foothill woodlands and savannas, an increasingly rare native oak.
Growing Engelmann oak
Grow Engelmann oak in full sun and low water. Mature plants reach 480 to 720 inches tall and spread 480 to 720 inches wide.
Wildlife value
Host plant for California sister.
Larval host plant for the California sister butterfly; acorns are an important food source for wildlife.
Common questions
- How much sun does Engelmann oak need?
- Engelmann oak grows best in full sun conditions.
- When does Engelmann oak bloom?
- Engelmann oak blooms in March and April.
- Where is Engelmann oak native?
- Engelmann oak (Quercus engelmannii) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.
- What butterflies or moths does Engelmann oak host?
- Engelmann oak is a larval host plant for California sister.
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 Engelmann oak? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.