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Pre-treatment duration summary
Click on the common names to see how to grow these trees and shrubs.
| Common Name | Latin Name | Warm | Cold |
|---|---|---|---|
| Alder | Alnus glutinosa | n/a | 4-6 weeks (in fridge) |
| Ash | Fraxinus excelsior | Sow in second spring after collection (natural conditions) | |
| Bird cherry | Prunus padus | Sow in first spring after collection (natural conditions) | |
| Blackthorn | Prunus spinosa | 4 weeks | December-March (natural conditions) |
| Crab apple | Malus sylvestris | n/a | 14 weeks (in fridge) |
| Dog rose | Rosa canina | Sow in second spring after collection (natural conditions) | |
| Downy birch | Betula pubescens | n/a | 4-6 weeks (in fridge) |
| Elder | Sambucus nigra | Sow in first spring after collection (natural conditions) | |
| Guelder rose | Viburnum opulus | Sow in first May after collection (natural conditions) | |
| Gorse | Ulex europaeus | Boiling water treatment | |
| Hawthorn | Crataegus monogyna | Sow in second spring after collection (natural conditions) | |
| Hazel | Corylus avellana | Sow in first spring after collection (natural conditions) | |
| Holly | Ilex aquifolium | Sow in second spring after collection (natural conditions) | |
| Oak spp. | Quercus robur, Q. petraea | Not dormant. Sow as soon as possible after collection | |
| Wild cherry | Prunus avium | Sow in first spring after collection (natural conditions) | |
| Wych elm | Ulmus glabra | Not dormant. Sow immediately after collection | |