Greenhouse Grow .. a few issues

Hi,

Im new to outdoor growing but this year decided to give it a grow as i managed to acquire a nice cheap greenhouse. Im currently having a problem in that my lower leaves are starting to yellow and die and its slowly working its way up the plant. It started on the large fanleaves after topping and has moved up slowly since these have died.


The plant has been vegging for a long time now (since end of march) and just wondered if this is caused by it wanting to flower? If not could this be PH probs caused by rainwater? I assumed that since MJ grows naturally outdoors that ph of rain wouldnt be an issue

Strain is big bang im watering with rainwater and biobizz nutes used miracle gro organic for potting mix currently in huge pot maybe like 10 gal.

Heres what i thought could be possible issues:

1) PH imbalance
2) Temp issues (sometimes gets up to 31c in greenhouse)
3) crap nutes - these were used from previous grow and so far i havnt seen good results from biobizz
4) fast growth - lots of budding sites since topping and tying down - could this be the plant using energy from lower plant to feed growth further up?

also ive just noticed this morning that small brown spots are starting to appear on some leaves..

Maybe this is a natural process but she hasnt even begun flowering yet and tbh i wasnt expecting her to start yellowing just yet.

Thanks
JR

classic nitrogen deficiency friend

give some magnesium too..epsom salts 1 t spoon per gal......

Thanks guys for the help, much appreciated. Would an N def look like that typically on the bottom and the tops still look good in colour? Also what do you make to these brown spots on the top leaves? are these caused by the same problem

They look like spider mites man, check under the leaves and look for tiny brown insects walking around.
They pierce the leaf with their mouth parts and suck the juices, that's why they leave the little dots. If they are mites, there are many routes to take.

Some like to a mitecide, others like to use neem oil, others use pesticide. A good green way is just to use some dish soap and water and spray the plant.

But me being a hippy and shying away from chemicals, all i do is mist the plant as they hate high humidity. Then i just go around my plant with a paint brush, brushing them off the leaves, or sometimes i just rub my thumb under the leaves and squash them.

Careful when misting your plants though, as if you do it too often you might get mold. Goodluck!

1 t spoon neem loi.......2 litres water..drop of dish liquid............shake shake shake n spray stems, under leaves, pots, earth......problem solved

del66666 said:

1 t spoon neem loi.......2 litres water..drop of dish liquid............shake shake shake n spray stems, under leaves, pots, earth......problem solved

Click to expand...

this is the best pesticide so far i have ever used, am sure others work better and all but i don't wanna be smoking arsenic when i harvest (JK ) but for real i have used this with success for 5 months now even on my veggies and its awesome , just be care full with the soap to much will hurt ya plants

EDIT: for a little extra umff you can add boiled peppers,garlic and onions, you don't have to get them all just as many as are readily available

is ur greenhouse o cheap one of ebay looking to get one for a 6 plant grow anyway u could take some outside pics of the greenhouse itself

Thanks for all the advice guys, i will try and see if theres any little bastards on there and will spry them up with some neem ASAP.

lthopkins said:

is ur greenhouse o cheap one of ebay looking to get one for a 6 plant grow anyway u could take some outside pics of the greenhouse itself

Click to expand...

Yeah its a cheapie got it for thirty quid here in uk in wilkinsons, but they should be selling these in the states too, im presuming thats where your at. those Ebay ones will be exactly the same spec.

TBH ive not had any problems with it at all, only thing is poor airflow but my plant is growing bigger and you get the added benefit of free sunshine whilst being a bit more discreet.

As said though as long as youve got warmer temps youd be better off doing it outdoor, only reason i use it is stealth