Grow More triple 20, 100% water soluble, in an injector. I pay about $60.00 for a 25 pound bag. It is formulated for injectors and is chelated so all the micros stay in solution and the nitrogen is from NA4, (ammonium nitrate) which is available to the plant at the moment it hits the soil. Plants can only eat NA4 so all other fertilizer must be broken down to usable components for use.
Another thing, many of the current black pine crowd is passing off this whole candle prune in June thing and cut the fertilizer. Mostly these guys are using organic fertilizer in the form of cakes which are slow release, slow to bacterilize and slow to start performing. They are also slow to stop. Start fertilizer cakes in Feb. and it takes about 60 days for the bacteria to break down the humates to na4 for the plant to absorb. So cakes are not full performance till April. Stop them in June, and they continue to breakdown and provide na4 for months after removal. Use ammonium nitrate and stop on Monday and fertilizer is stopped on Tuesday with wash thru....period.
