Burning leaf tips on 8 week old plants

[GreenPlant]

Hi guys, I'm growing two plants outdoors (bubblegum and AK47) and both have the same problem. The tips of the leaves look as if they are starting to burn. I have not used any fertilisers or nutrients yet so that's not the problem but I don't know what to do. They are in big pots so plenty of room and are getting plenty of sunlight. Could this just be a problem with too high PH content in the water? Thank you!

GreenPlant Reviewed by GreenPlant on 05-16-2011. Burning leaf tips on 8 week old plants Hi guys, I'm growing two plants outdoors (bubblegum and AK47) and both have the same problem. The tips of the leaves look as if they are starting to burn. I have not used any fertilisers or nutrients yet so that's not the problem but I don't know what to do. They are in big pots so plenty of room and are getting plenty of sunlight. Could this just be a problem with too high PH content in the water? Thank you! Rating: 5

[CanGroIt]

What soil you using? Does your soil have nutes already mixed in?

Nitrogen usually leaves the leaves when there is a deficiency in the root zone. It starts at the tips and then drains the rest of the leaf, all the way to the stem. Might be an N deficiency but it could be other factors as well..... I don't think it would hurt to give a light dose of nutes to see if that helps...

Got any pics? They'd help....

CGI::::::

[polishpollack]

Yeah, need pics. Are you sure it's burning of the leaf tips? If you haven't added anything and they're in potting soil, what soil is exactly? Are the leaves kind of a dark green or light green color?