If it gets too hot and dry the flowers can wilt and turn brown in color. 1b. Holey-Moly Foliage. This produces large brown spots with lighter brown or tan centers in the spots. is an attractive deciduous shrub that comes with the added bonus of being shade tolerant and low maintenance. Dry, Brown Leaves on Hydrangea. The spots may also appear on the flowers, which … If you have a border that gets early morning sun a white hydrangea will be ever so prolific in flowers. When a spot encounters a leaf vein, it spreads along it, forming an angular brown or black patch. 3. 4. Sometimes entire hydrangea leaves will turn purple as well. Light-brown centers surrounded by dark-brown rings create a bull's-eye effect. Flowers may also be affected. Hydrangeas, chrysanthemums, and lilies were all in the mix, but the hydrangeas were the first to start drooping. To fix, deeply water hydrangeas once a week. Hydrangea Leaves Edges Turning Brown Hydrangea plants that have either been planted recently or a growing in a pot are often susceptible to intense use of fertilizer. Ditto if your flowers wilt during the day and don’t bounce back at night. Two are still in pots, but are also turning brown and looking wilted. Make sure the hydrangea is in a place where there is morning sun and cool afternoon shade. are a poster-plant for the benefits perennials offer, bringing handsome foliage and beautiful blooms year after year. Two are planted on the south side of my home in zone 5 where they get morning and afternoon sun and evening shade. Brown spots appear on the leaves and grow rapidly in size. Do not place a hydrangea under a tree for shade, because the tree will most likely absorb the nutrients and harm the hydrangea. With their broad leaves and clusters of long-lasting fall and summer-blooming flowers, hydrangea (Hydrangea spp.) White blooms should turn greenish after a month or more; then the green tinted sepals can develop pink/red/purple splotches before turning brown. To confirm, look for brown spots on leaf edges. Leaves turn dark brown or black and drop. Since hydrangea blossoms are so big, deadheading a hydrangea makes a real difference in diverting energy to more important parts of the plant’s growth. I recently had a colorful bouquet of flowers sitting on my desk as a little pick-me-up, and despite my best efforts, most of them started wilting after about a week. I added Mushroom and Peat moss to the original soil when planting. But if you see a bloom go directly from white to brown, that would not be normal and either a fungal infection is afoot or the plant needs more water. Hydrangeas (Hydrangea spp.) Acid to neutral soil is also ok. but dappled shade all day would be better as the blooms would be protected from heavy rain. A hydrangea with brown leaf margins is likely suffering from a cultural problem, disease or pest infestation. I have 'annabelle' She is beautiful and has huge flower heads, but they get so heavy that in a rain they fall over. You should carry out this practice all through the blooming season to encourage new blossoms and keep your plant looking fresh. Anthracnose is caused by the fungus Colletotrichum gloeosporioides. If your hydrangea blooms are turning brown too soon and quickly petering out, they likely need more water. My Quickfire hydrangea white flowers are turning brown. Brown Blooms. Develop pink/red/purple splotches before turning brown will be ever so prolific in flowers the flowers wilt. Pink/Red/Purple splotches before turning brown too soon and quickly petering out, they need! 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