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Wednesday, Apr. 5th 2017

Fruit: Fertilizing the Home Orchard



​Fruit trees benefit from fertilization around the bloom period, but the amount needed varies with the age of the tree. Normally, trees primarily need nitrogen, so the recommendations are for a high nitrogen fertilizer such as a 27-3-3, 29-5-4, 30-3-3 or something similar. Though recommended for lawns, these fertilizers will also work well as long as they do not contain weed killers or crabgrass preventers. Use the following rates:
         Trees 1 to 2 years old, apply one-fourth cup of fertilizer per tree;
         Trees 3 to 4 years old, apply one-half cup per tree;
         Trees 5 to 10 years old, apply 1 to 2 cups per tree;
         Trees more than 10 years old, apply 2 to 3 cups.
You may also use nitrate of soda (16-0-0) but double the rate recommended above. If a soil test calls for phosphorus and potassium, use a 10-10-10 but triple the rate.
On apple trees, last year’s growth should be 8 to 10 inches, cherries should have 10 to 12 inches, and peaches should equal 12 to 15 inches of terminal growth. If less than this, apply the higher rate of fertilizer, and if more, apply the lesser amount.
Spread all fertilizer evenly on the ground away from the trunk of the tree and to the outer spread of the branches. Water in the fertilizer. (Ward Upham)

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University of Missouri Extension Master Gardener Program