Did you plant your angelonia somewhere where it can get at least 6 hours of direct sunlight?
Did you plant your angelonia in well-drained soil rich in organic matter?
Do you water your angelonia only when the top of the soil feels dry to the touch?
Are you careful not to overfertilize your angelonia?
Did you deadhead your angelonia to promote blooming?
Do you keep your angelonia free of pests and diseases?
Give your angelonia plants a full day of sun to provide the energy plants need to bloom continuously. Plants that don't get at least six hours of direct sunlight will get leggy and will have sparse blooms.
Angelonia plants are tolerant of a wide variety of soils, but a soil rich in organic matter will reduce its watering and fertilizing needs. Plants need good drainage to prevent root rot, so if you have heavy clay consider growing angelonia in raised beds or containers.
Angelonia plants are tough and will keep on blooming through periods of drought. Water when the top of the soil feels dry. Additional moisture is fine if the plants have good drainage.
Fertilize your angelonia plants monthly, as they are light feeders and too much fertilizer will cause an overgrowth of foliage at the expense of flowers. You can also choose a balanced flower fertilizer with a timed-release mix of a 10-5-10 or 12-12-12 fertilizer at planting time, which will eliminate the need to fertilize again.
Unlike many annuals, angelonia plants don't require deadheading to promote blooming. However, cutting the plants back promotes bushier growth.
Good job! You are taking good care of your angelonia.
Aphids can be a problem on angelonia plants, especially early in the season when plants are in their rapid growth phase. A light misting of insect soap twice a week will knock the pests out before they get a chance to deform your plants. Avoid overwatering or planting in poorly draining soil as wet soils can lead to root rot.
https://www.thespruce.com/how-to-grow-and-care-for-angelonia-4687127

Sreten null
Hi! I’m Sreten Filipović. I graduated from the Faculty of Agriculture at the University of Belgrade, with a master's degree in Environmental Protection in Agricultural Systems. I’ve worked as a researcher at Finland's Natural Resources Institute (LUKE) on a project aimed at adapting south-western Finland to drought episodes. I founded a consulting agency in the field of environment and agriculture to help farmers who want to implement the principles of sustainability on their farms. I’m also a founding member of the nonprofit organization Ecogenesis from Belgrade whose main goal is non-formal education on the environment and ecology. In my spare time, I like to write blog posts about sustainability, the environment, animal farming, horticulture, and plant protection. I’ve also published several science-fiction short stories.
You can find me on LinkedIn at https://www.linkedin.com/in/sreten-filipovi%C4%87-515aa5158/