Why do my dahlia buds come out black?


So sorry that you missed this season's dahlias.

Yours may have had botrytis blight which causes a dark, sometimes fuzzy, appearance to the bud. It is a fungal disease that is common for dahlias in cloudy, wet weather. You can reduce incidence by giving plants space for air circulation and keeping your dahlias in a very sunny spot in the garden where moisture will burn off all day.

Only water these plants in the morning and at ground level so that your splashing doesn't add to moist conditions.

Courtesy of NYBG Plant Information Service


  • Last Updated Jan 12, 2021
  • Views 487
  • Answered By Leslie Coleman

FAQ Actions

Was this helpful? 0 0

Ask a plant expert

Send us an email or use the question form below.

Submit a question

Before submitting your question, try searching our Plant and Gardening FAQ page and Help Guides. Still need help? Fill out the form below and a plant expert will answer your individual plant and gardening questions. We will respond to questions in the order we receive them.

Your Question
Your Info
Fields marked with * are required.