Did you planted your foamflower in partial to full shade?
Did you planted your foamflower in well-drained soil, rich in humus and organic matter?
Are you making sure that the soil is kept evenly and consistently moist, but never soggy or flooded?
Do you fertilize your foamflower regularly?
Do you keep your foamflower free of pests and diseases?
Foamflower needs partial shade to full shade. A couple of hours of morning sun is the most that should be available to these plants, although they may be planted in partial sun in more northern areas where the sun isn't as strong.
Plant foamflower in soil that is rich in humus and organic matter. The soil should be equally able to retain moisture and drain well because foamflowers do poorly in wet soil, which can cause root rot.
Foamflower needs evenly moist conditions. It can withstand a short period of drought, but don't let the soil be dry for extended periods. Make sure to add wood chip mulch to keep the soil is moist and cool conditions.
When grown in the right soil, foamflower does not need fertilizer. However, it may benefit from the application of a balanced fertilizer in early spring before the new growth starts.
Good job! You are taking good care of your foamflower.
Foamflower is not affected by serious insects or diseases. Slugs and snails can be a problem. To control slugs and snails use diatomaceous earth around your plants. Proper watering is key to avoiding rot and fungal disease. Foamflower thrives in soil that is moist but never soggy.
https://www.thespruce.com/foamflower-plant-profile-4799000
https://www.gardeningknowhow.com/ornamental/flowers/foamflower/growing-foamflowers.htm
https://www.easyshadegardening.com/foamflower.html

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/