64+ Azalea Leaf Blight

Azalea gall this azalea disease commonly occurs in early spring on new leaf growth. Leaf gall commonly seen in azaleas leaf gall is a springtime disease that may affect other rhododendron species.

Téléchargement gratuit Azalea Planting And Care For Your Marietta Yard

Azalea leaf blight!!!

As the spots enlarge the petals become soft and watery and the whole flower collapses. If the foliage on a branch wilts dies and falls from the plant. Ovulinia azalaea petal blight affects azalea plants during cool wet weather and can cause considerable damage to the flowers. Phyllosticta leaf spot is a fungal disease that causes small dots of yellowish tan to brownish spots on the rhododendron s leaf surfaces.

Spray undersides of the leaves with malathion dimethoate cygon or acephate orthene. The leaves become curled fleshy and pale green to white. On evergreen rhododendrons actual growth of the fungus on the lower leaf surface can be hard to detect but infection tends to cause pale green reddish purple or yellowish patches on the upper surface on deciduous azaleas white powdery fungus grows over the upper leaf surface. Symptoms of infection begin as leaves wilt die and then fall from the branches.

Azalea lacebug upper surface of leaves has a gray blanched or coarse stippled appearance. Dark brown pimple like fungal fruiting structures form within the spots. Circular to irregular brown spots up to 1 2 inch in diameter form on leaves especially lower leaves. The undersides of the leaves become discolored by excrement and cast skins.

Télécharger gratuitement Mycosphaerella Leaf Spot Ornamentals Hotline