URGENT! Marijuana leaves turning yellow?!?

i have a question about my outdoor marijuana plant growing in NSW Australia. some of the leaves are starting to turn yellow and shrivel and die. mostly leaves on the lower half of the plant and larger leaves. i have pictures. it is in a 5 gallon pot and i use seasol which is a seaweed fertilizer once every 2 days and also blood and bone mixed with water every 2 or 3 days. we have had hot weather the last week or so but this has started happening about 3 weeks ago. the newer leaves and tops of plants look just fine its more the older and bigger leaves starting to turn yellow. and the tips shrivel and turn brown and die. i have pictures to show you. im worried because it should start flowering in a month or so. any help is apprecaited. thankyou


http://s437.photobucket.com/user/jimoffy/library/?sort=3&page=1

In hot temps. they take less nutes and more water but looking at your girl, and as you say it started three weeks ago, I would think you may not be feeding her enough N. Seaweed is fantastic as is blood fish and bone but are these not used primarily for root building ? As she is also as big as she is it looks like you may need to repot her with fresh soil.... She looks to me like she needs a good feeding with N before she goes into flower.... She could possibly be root bound, in which case "if the nutes are there in the soil", she may not be taking them because when they get root bound they also find it more difficult to absorb nutrition through the root zone. ???

It sounds like it is lacking nitrogen. photocrap has too much malware for my old computer to view anything there.

please use our internal picture system we have built in to our forum

photobucket isnt very secure,