Field ManualAll plants

Photo: Krzysztof Golik, via Wikimedia CommonsLicense: CC BY-SA 4.0

Delavay tea olive

Osmanthus delavayi Franch.

Pet & Human Safety

People: No hazard foundPets: Not on the ASPCA lists as we read them
Hazardous parts
Not yet checked.
Preparation
n/a
Hazard type
Not yet checked.
Hazard route
Not stated by our sources (not a clearance)
How complete this information is
The safety information on this page is partial. Where a source covers a point, it is shown; where none does, the page says so.

Toxic to pets
No ASPCA entry found.

No ASPCA page for this species. Do not treat as pet-safe.

PlotAndPetal cannot tell you whether a plant you found can be eaten. Only someone who can see the plant can identify it.

Poison control

If someone has collapsed, cannot be woken, is having a seizure or has trouble breathing, call 911 now. For any other possible poisoning, call Poison Help: 1-800-222-1222.

Emergency number source: U.S. federal law (47 U.S.C. § 251(e)(3)), read 2026-10-07.

Naturalist Lore

Historical Background & Breeding Lore

The history of this plant and its name, and how it was bred, where we have them.

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Care

Hardiness zones

USDA 7a-9b per NC State Plant Toolbox; hardy to USDA zone 7 per Oregon State

Light

Flowers best in full sun to partial shade; tolerates shade (NC State).

Water needs

low low is a plain-language reading of NC State: drought-tolerant when established, with good drainage; Oregon State says well-drained soil. Always finger-test two inches down.

Mature size

US: NC State: 6-12 ft tall and 6-12 ft wide; Oregon State: 6-8 ft tall and wider; UK: Trees and Shrubs Online: 6 to 20 ft; about 10 ft south of London and slightly over 20 ft in some Cornish gardens

Soil & Drainage
Pruning & Flush Rhythm
Feeding Schedule

How to prepare the soil, when and what to feed, and how and when to prune where that applies.

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Anatomy & Guilds

Botanical Anatomy & Characteristics

How the flowers and leaves are built and which pollinators visit, where we have them.

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Field Doctor

Field Doctor

What can go wrong with this plant and what to do about it, where we have them.

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Vintage Plates

Vintage Plates

Old botanical drawings from public libraries are in the app, for plants where we have them.

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Sources

  1. NC State Extension Plant Toolbox - Osmanthus delavayi (Delavay tea olive)
  2. Oregon State University Landscape Plants - Osmanthus delavayi
  3. Trees and Shrubs Online (International Dendrology Society) - Osmanthus delavayi
  4. Kew POWO/WCVP - accepted-name record
  5. ASPCA Toxic and Non-Toxic Plants list

How we choose sources

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