Angelonia is a profusely flowering perennial that is easy to grow. Its blooms, which last all summer long, come in shades of pink, purple and white. Because of the wide variety of shading and coloring in angelonia’s flowers and its easy growing, it often is cultivated in the home garden. Even amateur gardeners may cross colors to see what sprouts up next.
Loosen and turn the soil to a depth of six inches. Remove any plants, roots, rocks or other debris as you upturn the soil.
Spread aged compost two inches thick over the surface of the soil.
Evenly mix the compost into the top six inches of the soil. Rake the soil smooth.
Sow the angelonia seeds six to eight weeks before the last expected spring frost. Angelonia looks best when growing in a thick stand as in the wild. Loosely scatter the seeds over the soil so that there is one seed roughly every four inches or so.
Press the soil in the bed down with your hands to ensure the seeds make firm contact with the soil.
Cover the seeds with a 1/8- to 1/4-inch layer of soil.
Water the bed with a gentle spray of water from a hose, sprinkler or watering can until the top few inches of the soil are quite moist but not soaking wet; puddles should not form. Continue to keep the soil moist to this depth with regular watering. The angelonia seeds germinate in one to two weeks.
Angelonia grows best in USDA growing zones 9 through 11.