Approximately 200.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
USDA average, annual, minimum temperature Zone:8
Type of plant - shrub to tree
Flower: CREAM, to 1.5cm. dia., profuse
Fruit: to 10x9mm., cup-hemisph.
Foliage: juv. to 6x5cm., glaucous
Height in meters: 20x12
Common names for Eucalyptus risdonii:
is included in the following B and T World Seeds flowering plant categories:
16: Eucalypts Relatively Hardy in UK
31: House and Container Plant Seed List
44: Cut flowers Commercial and other Recommended Varieties
65: World Coastal Tree and Plant Seed List
132: Windy Condition Plant Shrub and Tree Seed List
134: Tasmanian Natives Seed List
168: Shade and Shelter Tree and Shrub Seed List
172: Tree Species For Coppicing
178: Shady Damp Condition Plant Seed List
185: Plant Species whose germination is improved by Smoke
190: Trees and Shrubs For Mediterranean Climates
191: Tropical Shrubs and Trees
Eucalyptus risdonii seeds will usually germinate in 14-90 days, even under good conditions germination may be erratic. Sow Eucalyptus risdonii seeds on the surface of a Peaty seed sowing mix at about 22°C.
Stratification (cold treatment or vernalization) Some seeds need to be overwintered before they will germinate. Some seeds need just a couple of weeks, others 3 months. Seeds can be stratified in dampened peat or sand, in a plastic box or bag at 4°C or 5°C in a refrigerator. The seeds should not be frozen or in a wet medium. Very small seeds can be sown on the surface of their growing medium, in pots sealed in plastic bags, and kept in the 'fridge. Many vernalized seeds need light to germinate when they are sown in the "Spring".
Sow seed and chaff together. (Pre-chill for 4 weeks).