How Do You Care For Angelonia. 1 Deadhead spent flowers to prevent them from developing seeds. If you planted these plants in the ground it is not likely they will survive a winter.
Keep the soil around young seedlings moist. Split the plants by dividing the root clumps. Angelonia plants prefer moist well-drained soil but they can withstand brief dry spells especially if the soil is enriched with compost before planting.
Allow the soil to dry out between waterings once the plants are well-established.
They thrive well in the south part of the US where sultry conditions dominate. Water the new plantings two to three times weekly for two to three weeks. Apply an all-purpose fertilizer monthly or use a time-release fertilizer according to instructions. If they are in pots you can move to a sheltered area like a garage.