Late planted sativas yellowing...

[bongoman]

Hi there

 

I've got a couple of bagseed sativas that were planted really late in summer more as an experiment rather than as a serious grow. Planted in early-Feb in NSW northern rivers.

 

They are in 10 litre pots and being fed bio:juice bloom most waters (10ml per litre). They were planted in soil and get the odd feed of seasol and a little molasses as well.

 

Because they were so late, they only started flowering about 5 weeks ago. One plant in particular is starting to yellow off: most of the lower fan leaves spreading up to the heads. The heads themselves are still green but the yellow seems to be spreading. Could this be a deficiency? Or too much bloom ferts?

 

There is no danger of frost here so I can let em go a bit longer to try and pack some more weight on. But am having trouble diagnosing the yellowing. I don't want to keep feeding them if that is the problem but also don't want to hold back if they need more fertiliser.

 

Anyone familiar with Bio-Juice? It's an Australian-made organic fertiliser.

 

Any clues appreciated.

[WantDaChronic]

its pretty hard to burn plants with organic nutrients, but imo a flush wouldnt hurt + if they are fairly large plants, a 10L pot is no where big enough for them and once they are rootbound, fan leaves will start dying from the bottom up and will then eventually work its way to the smaller leaves

[SukonmiSkunk]

its a classic nitrogen difficiency... maybe add some organic nitrosol to your flowering mix....be careful.. they dont need a lot of nitrogen, but its still an important part of the plants diet.. too low a level of N will inhibit the way the plant takes all the other nutes...

[Stoney]

i agree with ss i recon you got a nitro diff an ya hands i would give a good dose of nitrogen or just add extra A part nutes as this is usually the part that has the nitrogen or as ss said some nitrosol is good as well

i would also give them a flush after they have gotten there colour back and also i would have a think of upsizing ya pots or trimming ya roots abit

 

hope this helps

also a pic would be a good help

 

cheers

[two2time]

ok thats sounds good

[bongoman]

Thanks everyone for the helpful replies. I since realised how wet the roots had been as well so I've really let them dry out for a bit. Soil is dry and crumbly on top but still moist if I push my finger through a drainage hole at the bottom. Then I'll do a watering with my nutrients - even tho' it is a bloom fert, it still has 3-6-6 (N-P-K).