Claude, they are all OK to use.... I would probably stick to the Schultz
all purpose if it has enough trace elements.

However, they should not be used at the same concentration. I would
recommend about 100-150 ppm N as the concentration, which translates to:

19-31-17 about 1/2 teaspoon per gallon, or 10 drops per liter
10-60-10 or 10-15-10, about 1 teaspoon per gallon, or 20 drops per liter
8-14-9 about 1.25 teaspoon per gallon, or 25 drops per liter
5-30-5 about 2 teaspoons per gallon, or 40 drops per liter

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Books, Artwork, and Lots of Free Info!

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"Claude" wrote in message
. ..
Hello Ray!


Regarding plant food for orchids, which one is better:

I have : orchid plant food : 19-31-17
Bloom booster : 10-60-10

or Schultz all purpose: 10-15-10
Schultz bloom 5-30-5

or the schultz for african violet : 8-14-9

All schultz products are used 7 drops in 1 liter of water every time you
water.

I`ve been using the two firts one for a while and my phals are rooting
like
crazy! This is why I`m thinking switching fertilizer!
What do you think?

Claude