Neem trees (Azadirachta indica) originated in India and grow over 45 feet tall. Its oil is hugely important in some herbal remedies and as an insect repellent. In the United States, these trees can grow in warm climates, such as Texas, Florida and California. Neem grows most easily from seed. Knowledge of how to plant and care for these seeds will help you grow a healthy and beneficial tree.
Fill a seed flat with equal parts of peat and perlite. Water the potting medium deeply. Place the seeds on top of the soil and cover with just enough soil so you can't see the seed anymore.
Place the seed flat where it receives morning sun and afternoon shade. Water again when the top 1 inch of the soil dries. The seeds will die if you over-water them.
Transplant the neem seedlings into their own individual pots when they grow about 3 inches tall. Use the same potting medium and plant at the same height the seedling resided in the seed flat.
Fertilize the neem with a balanced fertilizer marked 10-10-10. The numbers mean that the plant food as 10 percent nitrogen, 10 percent phosphorus and 10 percent potassium. Follow the directions on the package for application instructions, as each brand will differ.
Transplant the neem to larger pots as it grows larger. Small pots will hinder its growth. Alternatively, if you live in a warm climate, transplant the neem outdoors.