Managing Botrytis Blight in the Garden

Brown buds that fail to open on peonies and some roses, especially the white and pink flowered varieties are likely the result of Botrytis Blight also known as Gray Mold.

This fungal disease is most common in cool rainy as well as humid weather.  The disease attacks a variety of ornamental and edible plants and often is specific to the plant part infected.

The bud blast and flower blights we see here may also occur on mums, dahlias, dogwood, geraniums, hydrangea, marigolds, and sunflowers.

Look for the fuzzy gray growth and small black specs on the dead tissue.

Remove infected parts and place in a paper bag for disposal.  And don’t compost.  Only clean up during dry weather as moisture helps spread the blight.

Ongoing sanitation, fall clean up and better weather is usually enough to keep this disease under control.

A bit more information: Several other fungal diseases can cause spots on the leaves and stems of peonies.  These spots can be round and circular or irregular in shape.  Stem cankers, sunken discolored areas, can cause twisting and even death of the stem.  Sanitation is usually enough to manage these diseases on healthy established plants.

Tags

fungus flowers-ornamental-grasses problems-pests-weeds trees-shrubs-roses-vines-groundcovers peony sunflower rose dahlia zonal-geranium african-marigold french-marigold cornelian-cherry-dogwood bedding-dahlia creamy-edged-tartarian-dogwood red-twig-dogwood pagoda-dogwood gray-dogwood

Related

Audio

Attract Nature’s Vegetarians - Goldfinches to the Garden

Audio

Salvaging Leggy Overgrown Shrubs and Hedges

Audio

Celebrate National Bird Feeding Month; Grow a Garden for the Birds

Audio

National Bird Day – Time to Plan a Bird Garden

Audio

Add Homes for the Birds to Your Landscape

Audio

Water Problems in Your Landscape and Solutions

Audio

Shrubs that Attract Birds

Audio

Shrubs Made for the Shade

Video

Create a Year-Round, Bird-Friendly Garden

Video

Shrubs Made for the Shade

• ← Previous
• 1 (current)
• 2
• Next →