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Common name: Box Elder
Characteristics: Deciduous tree to 20 m spread 5 m
Seeds per packets: 10
Fast growing tree that often forms several trunks and can form impenetrable thickets with triangular lobes turning brilliant red in autumn.
New growth shoots are green, often with a whitish to pink or violet waxy coating when young.
A fast growing tree that often has several trunks and can form impenetrable thickets.
Can be easily be trained as a bonsai specimen.
Native to North America.
Prefers a well-drained light to medium alkaline in a protected sunny position. Frost resistant but drought tender.
Although seed can be sown most of the year in Australia seed is generally best sown in spring or autumn, avoid the coldest and hottest months of the year. The optimum germination temperature for germination is around 18-22°C
Cold stratification is recommended.
Cold treatment may not be critical for germination to occur in colder regions but should give increased germination rates.
This can be replicated by cold stratification in the refrigerator for 6-8 weeks. Alternatively over wintering in the garden in cold climates will assist germination.
General note: Seeds of many natives are dormant and require specific conditions or pre-treatment for germination.
Do not be too hasty to discard seed that does not germinate, seeds will often lay dormant until the conditions are similar to their natural requirements for germination to occur. Containers put to one side will often surprise long after they were discarded.