NEWBIE! What am I doing wrong?

by Sue
(Chester, NH)

So I bought this great hydrophonics system and I was ready to begin my seedlings. I put the seed in rock wool and placed them in a tray on top of a heat mat and used a flourescent light a few inches away and left if on for about 18 hours a day. It is rather cool in our house so I have a little space heater and would turn that on low to keep the area warm (75-80). I water once a day with diluted FloraNova 7-4-10. I started with 15 seedlings and now only have 2. They grew great for a a few weeks and then just died off. They got pretty tall but no roots ever came out of the wool plug. I decided to try again doing something different. I placed the seedlings in a tray and will keep the plastic cover on. But I think I have to take it off in order for the light to penetrate? I also have placed them in a room with a big window sill and will let the sun get to them while it is out. Does anyone have any suggestions as to what I am doing wrong?

_____________________

Answer from Stella:

Hi Sue,
I believe the problem is the length of time you left the plants as seedlings. Although you are technically supposed to wait to transplant until you see roots coming out the cube, some varieties are not as prolific with the roots.

You should only keep your new sprouts in a seedling setting for a week or two tops. If you keep them indefinitely in the seedling flat, they will die. So get them up and with 2-4 leaves, then get them into the main hydro setup as soon as possible.

Hope this helps!

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Comments for NEWBIE! What am I doing wrong?

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Feb 26, 2012
PH
by: memwl

I hopeyou checked your ph,this can play a important role,rockwool needs to soak in a balanced solution before use that is a ph of about 6.0 approx.

Good Luck

Feb 28, 2012
another question
by: Anonymous

Thanks so much for the help. Now I have placed my seedlings in the hydrophonics set up but the roots are so short that when the container fills with water it does not reach the seeling. Should I lower the seedling in the pot or water it from the stop until it gets bigger? Sorry for the lack of knowledge here.
----------------
Hi Anon,
I water from the top with a turkey baster until the roots get going.

Mar 11, 2012
thanks
by: Anonymous

Working beautifully! Thanks!

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