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Then water.

Sep 02, Avoid feeding a newly planted blueberry bush until new growth begins to emerge during the first spring. At that time, I recommend fertilizing with a mild organic plant food, preferably one that contains iron and or sulfur.

Spread the fertilizer atop and just outside the perimeter of the root ball. Where mulching materials are scarce, a combination of mulch around the bushes and sod or clean cultivation in the aisles may be used. Fertilizing: Since blueberry bushes bear fruit on the previous season's growth, they must be fertilized generously to promote vigorous annual growth. Newly set bushes should not be fertilized until the start of new growth about one month after.

shown to be toxic to blueberry plants. Ammonium sulfate or urea is preferred, and ammonium sulfate will help lower soil pH. Phosphorus. is seldom needed in blueberry plantings. When a complete fertilizer is used, no additional phos­ fertilizing blueberry bushes in fall applications are necessary.

Ideally, any needed phosphorus should be applied before setting the plantsFile Size: 33KB. Jul 11, Ammonium sulfate is the most often used nitrogen source.

Ammonium nitrate and other nitrate containing fertilizers should be avoided because nitrate ions are very damaging to blueberries. blueberries also respond well to fertilizers containing urea, diammonium phosphate and slow release type nitrogen fertilizers.

Aug 20, This plant likes acid fertilizers such as rhododendron or azalea formulations. Choose a fertilizer high in nitrogen.

However, the fertilizer must not contain calcium nitrate or chloride as these can kill some blueberry plants. The fertilizer should contain ammonium nitrate, ammonium sulfate or sulfur-coated urea. These ingredients ensure that the pH is lower and Views: 54K.

Water the plants thoroughly when first planted.

Aug 06, For first- and second-year blueberries, divide the application rate in half. For third-year blueberry plants, multiply the application rate by Apply the full rate to fourth-year plants and older.

Blackberries can receive the full amount of fertilizer regardless of age. What is the Best Way to Apply Fertilizer?