Plant problems with all 4 of my females - Please Help !

Plants were germed in rockwool and were working out fine and then I potted them into a mix of perlite, peat moss and good quality potting mix. About a 2 weeks in under the shade cloth down the side of the house and they are starting to turn all really light green on the top node and the lower leaves are starting to fold over.

I did have them on a 1/3 strength mix of canna vega a+b with a ph of about 6.6.

Also one of my northern lights is looking a bit weird. It is growing very nicely but all the leaves are warped and it is growing very tall very fast.


Please assist ! :)

I've got a Northern Light doing the same, The clone off of it is doing it to, I think it is just some kind of pheno thing.
On your other plants, what are the low temps in your area? leaves folding under or over? not really enough info to troubleshoot.

For as young as they sound, they may have nutrient burn. Which is normally caused by too much, or started to early. If the plant is less than 4 weeks its best to wait until its 4th or 5th week. And I only start it at 1/4 strength just to be sure the young plant can handle the nutrients.

Also, how much water are you giving them, Potted or Earthed? Indoor or Out? And what is this "shade cloth" you speak of. MJ doesn't want shade, she wants Full Sun!

And, if you can get a few pics posted it would greatly benefit in our aid to help you.

Toodles..!

They are potted in medium sized pots, about 3-4 weeks old. 1 critical mass lowrider, 1 skunk #1 and 2 nl #5. They are potted in a mix of peat moss, perlite and potting mix. One of my NL plants is growing all retarded but all 4 plants are having the same issue with the new leaves being really white. I have them under a shade cloth with the rest of my garden just like they I wanted to get them adjusted to full sunlight ect.

The amount of growth has slow to almost nothing in the past week since the problem has started.

What should I do to fix this ?

Also just to add im in Australia so the lowest temp is about 10-15 at night and about 22-26 during the day.

the leaves look light green a strong inddacation that u need more nitrogen and i would ditch the shade cloth .but thats just a opinion.good luck bud.

Ditch the shade cloth. Like I said the plant likes and can handle full sun. Its a WEED, weeds are resilient to all growing conditions.

As for the new growth. I'd discontinue all nutes, water with plain Ph'd water for a week. Then start the nutes again at 1/4.

Maybe let the medium dry out a lil, so the roots find the bottom of the pot.

Its all trial and error. Take it in moderation.

I will start them off in full sun with just some plain water ph 6.6. They wont die or stop growing will they ? They should eventually come good ?

The retarded NL x5 in the foam cup is starting to come good but the rest are still getting no groth and having the same issue. Also one of the plants its starting to get red stems towards the top of the plant.

Any ideas ?

No change as of yet, growth has stopped completely. Should I flush them with some water or add some Epsom salts or something ? Please assist ASAP as I dont want my precious babies to die :(

I dont understand the shade cloth and are you sure youve bought the correct nutrients. I had canna vega A+B but it was for a recycling hydro setup where PH sould be about 5.5 and is no good for a plant in soil. Water your plants and check run off colour to decide wether to flush. Red stems is excessive phosphours so a wild guess (without more information) you need to flush and stop feeding. Check youve got the right nutes and ideally whether youre 18/6 or 12/12 you need full sun amd complete darkness so the shade needs to go. Personally i dont feed when the plants are that young as they are very sensitive but ultimately will keep on growing. Buy a moisture meter as the cannabis plant likes to compltely dry out before being drenched with water/feed.
d0ct0r

Looks to me like you bleached the plant tops by having them in too much sun. The sun can turn the leaves yellow and then white. I even experienced a little under my LED light in my last grow so I had to raise the light. I'm 95% that they got bleached. Those white bleached leaves are beyond repair but the yellow leaves may survive however they won't do much for the plant. They will always stay yellow. Only the new growth will become green again so let's hope your plants tops aren't too damaged. If my cool running LED can bleach a plant then you can be sure the sun can, especially if it was used to being a house plant and then put out in the sun, even under a cloth. Keep the plants in the shade from now on. the reflected sun from the foot path etc will be enough to promote growth.

Sure the cloth might take some of the heat but when the weeds are started indoors and then brought outdoors, when the sun is baking, you need to keep them in the shade and only put them in the sun for 15 minutes every couple of hours. You then build up the plants resistance to the new conditions. Going from indoors to outdoors is like one of us being placed in a desert without suntan lotion :)

So I would think it's a bleaching and the cloth you used saved them from massive heat stress. The edges of the leaves would begin to brown if it was heat stress.

This is not a nute burn or a deficiency. Nute burns don't turn the top white not does a deficiency. An Zinc, Iron or nitrogen deficiency can yellow the leaves but not make then white.
A PH problem will show brown blotches on the leaves and will turn the leaves eventually brown, not white.