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This is a discussion on fertilizer NPK within the New Growers: Ask the Senior Members forums, part of the New Growers category; Thank you very much for taking time to read this. I've been looking around this ...
Thank you very much for taking time to read this.
I've been looking around this forum for the best way to fertlize and I found a thread, where some people (Brutal dreamer was one of them) are just alternating between 3 different fertilizers and then the 4th week they just do water only.
Question number 1: Are you doing this all year long with all your orchid types?
This sounded very logical to me. Question number 2: but I just wanted to know the NPK's of these different fert solutions.
I'm using now a 20-20-20 fertlizer and I was planning to buy another one with high Phosporous to stimulate root health and bloom.
Question number 3: Is the third fert type one with higher nitrogen?
You advise is much appreciated.
Hi Dess, I also alternate between different fertilisers and yes I do this the whole year round.
The Ferts. I use are worm juice (more a soil enhancer than an actual fertiliser so no NPK ratio there as it is home made); Seaweed based fertiliser which again is called a soil enhancer so again no NPK ratio; and also Sulphate of Potash which is 41% K and the rest is S (no N, no P).
Apaprt from that I throw in a dollop of blood and bone during repotting to add a bit of Nitrogen and Phosphorus.
Part of my reasoning for having alternating ferts the whole year around is that having a mixed collection, the plants have different flowering and growing times so rather than focusing on each of the 600 plants, I just douse them all with water and fert at the same time.