How to Germinate Basswood

Basswood is a deciduous tree that grows rapidly in deep, moist and finely textured soil conditions. Flowering abundantly in late spring and early summer, the flowers give way to seeds that mature in the fall around September or October. Producing seedlings can be troublesome because the seeds tend to germinate poorly. However, there are a number of ways you can help improve results in the long term.

Basswood seeds
Sulphuric acid
Plant pots
Compost

Instructions

- 1
  Collect seeds as soon as they begin to turn brown and plant them immediately in a suitable potting compost. The Lady Bird Johnson Wildflower Center at the University of Texas at Austin states that "Seeds germinate most easily if fruits are collected as they first turn slightly brown."
- 2
  Use seeds that have been stored for at least 18 months. An extended period of dormancy is normal for basswood seeds and the chances of successful germination increases after a period in storage ranging from 18 months to 3 years.
- 3
  Break down, or scarify, the tough outer coating of the seed to improve the chances of germination. This can be achieved by soaking the seeds in sulphuric acid and then keeping them in chilled storage for three months.
- 4
  Plant the treated seeds in pots filled with compost and leave them in a protected position outdoors to germinate and become established seedlings. The seeds may well take up to two years to germinate and produce their first sprouts; expect a low success rate of 15-30 percent.
- 5
  Transplant the seedlings when established during the winter months. Once established in the ground, basswood grows and matures strongly.

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