Blueberry fertiliser amount

The one year plants were grown using two different fertilization regimes:

1) Osmocote 9-6-6 slow release with 19% sulfur. About 2 tablespoons per pot.

2)ammonium sulfate 21-0-0 at one tablespoon per 2.5 gal water once a week April thru July.

There was one plant of each variety for each fertilizer treatment. The 21-0-0 fertilized plants grew about 20% more than Osmocote. No fertilizer since last August, I was going for quality fruit.

I'll prune hard after harvest and possibly pot up to 10 or 15 gallon.

fruitnut


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tablespoon is 25 grams

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No, I'm only applying enough of that solution so that some runs out the bottom of the pot. One tablespoon 21-0-0 in 2 to 2.5 gal water fertilizes about 8 first year plants and two plants the size of the Star. I do that once a week when I'm pushing growth and once every month or two when not needing rapid growth. I also make sure water runs through the pot on all waterings between fertilizer. This will avoid salt buildup and results in fast growth, about 12 inches per month.

fruitnut
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