Does your deutzia grows in a place where it can get at least 6 hours of bright sunlight daily?
Does your deutzia grows in a well-drained soil?
Are you making sure that the soil is evenly moist at all times?
Did you fertilize your deutzia in the first year after planting?
Have you been pruning your deutzia before blooming in the spring?
Are you making sure your deutzia is free of pests and diseases?
If you want your deutzia to flower to its full potential you should provide it with full sun. Deutzia can tolerate partial shade to some extent but will do best in a place where it can get at least 6 hours of sunlight daily.
Deutzia can grow on many different types of soil, but it must be well-drained because these flowers do not tolerate waterlogged soil and "wet feet".
Water your shrub well after planting. Unless you have more than 1 inch of rainfall per week, give new plants a good soaking once a week during summer. Established plants can get by on less water, but most grow best if the soil remains evenly moist. Before watering, check the soil 1 inch down to see if it is dry.
You shouldn't fertilize deutzia at planting time or in the first growing year because these shrubs need time to settle in before being pushed to grow. Established plants should be fertilized just once a year, during early spring with a 10-10-10 slow-release, granular fertilizer.
Deutzia blooms on the previous year's growth. If you prune your plant before it has bloomed in the spring, you may remove flower buds. In late winter or early spring, cut away dead stems or stems that were broken during winter. Wait until after flowering is finished to cut back stems to the strongest buds.
Good job! You are taking good care of your deutzia.
Deutzias are relatively problem-free shrubs. Occasionally they can be attacked by aphids or leaf miners but they usually don't do much harm. The main disease to look out for are fungal leaf spots. Maintain good growing practices and you will minimize the chances of diseases.
https://www.nature-and-garden.com/gardening/deutzia.html
https://gardening.yardener.com/Problems-Of-Deutzia
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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/