120 S. Lake Street, Montgomery, Illinois
Tree Spray Schedule 2017-02-02T15:12:18+00:00

Spray Schedule for Apple, Crabapple, Pear and Quince Trees

Apply dormant sprays only when the temperature is above freezing and before buds show green tips. Borers that attack apple and pear trees will be controlled by the following spray schedule if the trunk is thoroughly sprayed. If borers have attacked young nonbearing trees, spray tree trunks every 2 weeks during June and July with a multipurpose fruit spray.

Mix No.
Time To Apply
Spray Material
Per 1 Gal
Per 10 Gal
Remarks
1Dormant; before buds swell, not laterPlant spray oil53Spray only when the temperature will not drop to freezing for 24 hours
2When green tissue is inch out of bud and again when flower buds show colorCaptan
Plus Diazinon or multipurpose fruit spray plus sulfur (if needed)
1-1/21

1

11/4

3/4

Add 5 tablespoons of wettable sulfur per gallon or 1 teaspoon of Benlate if powdery mildew is a problem on apples.
3When three-fourths of the petals have fallenSame as no. 2 mixSame as no. 2 mix XFor powdery mildew, see remark above. If bees are still coming to flowers, delay application or do not include an insecticide in the spray mix.
47 to 10 days after no. 3 mixSame as no. 2 mixSame as no. 2 mix XFor powdery mildew, see remark above. Insecticide applications at this time and again in about 2 weeks are especially important to prevent codling moth larvae from entering fruit.
5Continue sprays at 7 to 10 day intervals until July 1.Same as no. 2 mixSame as no. 2 mix XFor powdery mildew, see remark above.
6Continue sprays at 10 to 14-day intervals until 2 weeks before harvest.Same as no. 2 mixSame as no. 2 mix XFor powdery mildew, see remark above.

NOTE: Apply dormant sprays only when the temperature is above freezing and before buds show green tips. Borers that attack apple and pear trees are controlled by the spray schedule above if the trunk is thoroughly sprayed. If borers have attacked young, nonbearing trees, spray the trunks every 2 weeks during June and July with a multipurpose fruit spray. For apple maggot control in the northern half of Illinois and codling moth control throughout the state, continue to apply an insecticide or multipurpose fruit spray every 10 to 14 days through July and August.

Height in feetSpread in feetGallons per tree per application*
43Up to 1/2
5 to 83 to 61/4 to 1
8 to 104 to 81/2 to 2
10 to 158 to 151 to 3
15 to 2015 to 252 to 6

*Use the larger amount for trees in full foliage.

The amounts given in the spray schedules are in level Teaspoons (tsp), level tablespoons (tbsp), and level or partial cups. One level cup Equals 16 tablespoons. The suggested amounts are adequate for control. Do not use more pesticide than labels instruct. Excessive concentrations or amounts may injure foliage or fruit. Insufficient concentrations may fail to control pests.