How do you get rid of brown spots on hydrangeas?

How do you get rid of brown spots on hydrangeas?

Spray new leaves with fungicide every 10 to 14 days on bushes that showed damage last year. Spray new leaves as they appear on the plant and as they develop. Spray the stems and limbs and remember to get the leaf underside. Fungicide application on a regular basis may get rid of leaf spot if your issue was severe.

Why are the leaves on my hydrangea turning brown?

One reason why that happens is the lack of enough moisture. Hydrangeas that are still young and growing, require constantly moist soil until they get established. Therefore, the lack of enough moisture coupled with a switch from pot to garden can have this effect of leaves wilting and becoming brown.

Should you remove brown leaves from hydrangea?

Prune off the ugliest leaves, and adjust your irrigation to keep water off the leaves. When you see leaves with brown or yellowish spots, it could be anthracnose, a much worse issue because it can kill the shrub.

Why do my hydrangeas have rust spots?

The fungal disease rust generally appears as dry copper-, red- or orange-colored spots on the hydrangea’s foliage. To narrow down which fungus is infecting the hydrangea, rub the back of the infected leaf. If a copper-colored dust — which contains the fungal spores — is released into the air, the hydrangea has rust.

Why are my hydrangea leaves curling and turning brown?

Water Deprivation. Hydrangeas are flowering shrubs that require moist, well-drained soil in order to thrive. When hydrangea leaves are dry and curling, the most likely cause is drought or insufficient watering.

How do you fix scorched hydrangea leaves?

1. Provide adequate water for plants, particularly those planted in sunny or windy locations.
2. Fertilize moderately to avoid root damage.
3. Light summer pruning will help reduce the water needs of the plant, but may also reduce flowering.
4. When practical, consider moving those plants that routinely suffer from leaf scorch.

What causes brown spots on hydrangea flowers?

Anthracnose is a fungus disease that causes irregular brown spots on hydrangea petals and leaves. The fungus Colletotrichum gloeosporioides survives in dead plant material in the winter and infects hydrangeas in hot, rainy or foggy weather at temperatures between 75 and 90 degrees Fahrenheit.

Why do my hydrangeas have brown spots on the stems?

Brown spots on “Endless Summer” hydrangea (Hydrangea macrophylla) are likely caused by some form of leaf spot, a fungal disease that spreads through spores. They’re often encouraged by too much leaf litter or mulch around the plant, which creates an ideal environment for the fungus to thrive.

What is killing my hydrangea leaves?

Since, most ailing hydrangea symptoms are foliar, the number one cause is usually fungal. Leaf spots caused by Cercospora, Alternaria, Phyllosticta or Anthracnose stem from a fungal disease. They are most prevalent in moist conditions, although some occur in warm periods, while others form in cooler temperatures.

What causes leaf spots on Oakleaf hydrangea leaves?

An easy-care plant in U.S. Department of Agriculture plant hardiness zones 5 through 9, oakleaf hydrangea may occasionally develop leaf spot diseases. Leaf spots caused by the Cercospora hydrangeae fungus are dark purple and circular.

What does a Hydrangea plant look like with spots?

It begins as brown or purple spots on the leaves at or near the base of the plant. The circular spots are often small and scattered and usually measure 1/8 to 1/4 inches in diameter. Spots on the bigleaf hydrangea develop tan or gray centers surrounded by brown or purple halos. Leaves may eventually turn yellow-green and fall off.

Why are my hydrangea leaves turning brown?

Heavily fertilized plants seem to be more susceptible. At first, the brown spots are circular or slightly irregular in shape and somewhat sunken on fleshy leaves of hydrangea. The center of these spots may reach 1 inch or more in diameter and turn light brown to tan in color.

What does an oak leaf hydrangea look like in summer?

Once summer approaches the 6- to 8-foot-tall oakleaf hydrangea sheds its wallflower image to become the belle of the ball. Bursting into bloom, the plant produces cone-shaped clusters of bright white flowers up to 1 foot long.