We recommend scarification when germinating Silk Tree seeds as they have a very hard shell. Rub the end of each seed with a nail file or abrasive sand paper until a small, pale spot appears on the hull. Soak them in warm water for 24 hours before sowing in bonsai soil.
After their pre-soak, your tree seeds can be placed in paper cups or bonsai pots with a high quality bonsai soil mixture. Water soil thoroughly before planting seeds.
Once your pot is ready, sow seeds approximately 1/8" deep. Cover the pot with plastic, and put in a warm, bright place (75° to 85° F).
Once germination occurs the plastic wrap can be removed. Ensure to water and mist seedlings regularly. Due to their tender nature, seedlings cannot withstand dry conditions.
Plant 3-4 seeds per container and pinch off undesired seedlings after the first set of true leaves appear.