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Fruit Spray Schedules for the Homeowner
Blueberries
Blueberries
Dormant spray
Apply when buds begin to swell.
Phomopsis
Blueberries
Green tip spray
Apply when leaf buds are showing 1/4-inch green tip.
Stem blight, mummy berry
Blueberries
Pink bud stage and 25 percent bloom spray
Stem blight, anthracnose, mummy berry
- Material
captan
- Comments
Unless mummy berry or anthracnose is a problem, an intensive disease spray program is usually not necessary.
Blueberries
Full bloom spray
Stem blight, anthracnose, mummy berry
- Material
captan
- Comments
See comments in "pink bud" stage.
Blueberries
Petal-fall and cover sprays
Apply first cover about seven to 10 days after petal fall, about every 10 days thereafter if needed
Plum curculio
- Material
carbaryl
- Comments
Plum curculio larvae feed inside berries; infested fruit ripen prematurely and drops to the ground. Infestations of plum curculio are often more abundant when blueberries are near pome and stone fruits. Apply insecticides at petal fall and 10 days later.
Cherry and cranberry fruitworms, scale
- Material
carbaryl
or permethrin
or pyrethrins and rotenone
- Comments
Insect pests of blueberry are rare in much of the region; scout before applying insecticides. Unneeded applications of insecticides can create problems where none existed.
- Days between last application and harvest
Table 2
Japanese beetle
- Material
carbaryl
or malathion
or permethrin
or pyrethrins and rotenone
- Days between last application and harvest
Table 2
Stem blight, anthracnose, mummy berry
- Material
captan
- Comments
See comments in "pink bud" stage.
G6010, revised October 2008
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