Angel's trumpet (Brugmansia suaveolens) is sometimes called angel's star and brugmansia. It belongs to the Solanaceae (nightshade) family of plants. Angel's trumpet is a shrub-like plant that is easily recognized by its 12-inch long, trumpet shaped, pink or white flowers that hang down in a pendulous habit. Most varieties are hardy in the USDA zones 10 to 12. To grow angel's trumpets in Michigan, they should be started indoors and transplanted into containers so they can be brought indoors for winter.
Germinating Angel's Trumpet Seeds
Scoop in a high quality humus-rich potting mix into planting packs until they are full. Compress the potting mix in each cell until it's well-packed. Plant on starting them indoors around the first of April.
Set the planting packs into a tray-like container that can hold about 1 to 2 inches of water. Pour water into the tray. Allow the planting packs to absorb water until the potting mix is moist.
Plant one to two angel's trumpet seeds per individual cell in the planting packs. Push the angel's trumpet seeds into the soil with the blunt end of a pencil or the back side of a spoon to ensure good soil-to-seed contact.
Sprinkle over the top of each angel's trumpet seed no more than approximately 1/4 of an inch of the potting mix.
Transfer the tray containing the planting packs into a warm, light-filled location where the temperature will remain 65 to 70 degrees F. Provide eight to 10 hours of indirect light a day, but avoid placing the planting packs where they will receive direct sunlight.
Place a sheet of glass, or stretch a layer of clear plastic wrap over the tray of planting packs. Make sure the soil in the planting packs is never allowed to dry out. Germination of angel's trumpet seeds will begin in 10 to 20 days.
Remove the sheet of glass, or plastic wrap, from the planting packs once the angel's trumpet seeds germinate. Transplant the angel's trumpet seedlings into tubs in the middle of May or after the last frost date.
Transplanting Angel's Trumpet
Scoop in potting soil to fill up planting tubs until they are full.
Pour water into the tubs to saturate the soil. Dig out a planting hole in the center of each of the tubs that is the same size and depth of a planting cell.
Pop out an angel's trumpet seedling from a planting pack using your thumb or index finger.
Set an angel's trumpet seedling into its new growing container. Push the soil in and around the seedling. Water the angel's trumpet seedlings until the soil is damp to the touch.
Set the tubs in the garden in a sunny location. During its growing season, keep the soil in the tubs moist to the touch during the growing season. Water in the summer at least twice weekly, and provide enough water to saturate the soil.