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Tetradium daniellii

Bee-bee Tree · Korean Euodia · Korean Evodia

Family RutaceaeGenus Tetradium

Broad flat clusters of tiny greenish-white flowers at the ends of drooping branches, among long pointed leaflets.
FlowerChhe (talk)Public domain

About the plant

What it is and where it grows — not part of any germination protocol.

The plant

Habit
TreeExtension Gardener Plant Toolbox
Habit
treePlants of the World Online
Height
25-30 ft7.6-9.1 mExtension Gardener Plant Toolbox
Spread
25-30 ft7.6-9.1 mExtension Gardener Plant Toolbox
Flower
Gold/Yellow, Pink, WhiteExtension Gardener Plant Toolbox
Blooms
SummerExtension Gardener Plant Toolbox
Native range
China North-Central, China South-Central, China Southeast, Inner Mongolia, Manchuria, Qinghai and elsewhereGBIF Backbone Taxonomy
Hardiness zones
4-8Extension Gardener Plant Toolbox

Growing conditions

Sun
Full sunExtension Gardener Plant Toolbox
Soil
Clay, Loam (Silt), SandExtension Gardener Plant Toolbox
Soil pH
Acid (<6.0), Neutral (6.0-8.0)Extension Gardener Plant Toolbox
Moisture
Good Drainage, MoistExtension Gardener Plant Toolbox

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around August 27, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 26, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 6 months from start to step 2. Germination happens during step 2, in 42 days.

85% germination in 7–42 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Evodia p. 143Public domain
Show the original text
Evodia (Rutaceae). E. daniellii germ best when treated with GA-3, and the seedlings were normal and healthy. All other procedures gave long extended germinations in less than 1%. The GA-3 treatment was applied to seeds that had been 3 m at 40 (85% germ. in 1-6 w at 70), seeds that had been outdoor until April (85% germ. in 9-12 d), and seeds that had been DS for 6 m at 70 (55% germ. in 1-3 w). Even much lower dosages than those described in Chapter 3 were effective. The seeds were collected in November. The seed coats are in pairs with a larger viable seed and a smaller non-viable seed that soon rots.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Evodia p. 143. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Then 21 days to germinate.

55% germination in 7–21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Evodia p. 143Public domain
Show the original text
Evodia (Rutaceae). E. daniellii germ best when treated with GA-3, and the seedlings were normal and healthy. All other procedures gave long extended germinations in less than 1%. The GA-3 treatment was applied to seeds that had been 3 m at 40 (85% germ. in 1-6 w at 70), seeds that had been outdoor until April (85% germ. in 9-12 d), and seeds that had been DS for 6 m at 70 (55% germ. in 1-3 w). Even much lower dosages than those described in Chapter 3 were effective. The seeds were collected in November. The seed coats are in pairs with a larger viable seed and a smaller non-viable seed that soon rots.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Evodia p. 143. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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