Leaves curling upwards or inwards. So, what's the prognosis, doc? - Cannabis Cultivation

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xenn
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Registered: 07/20/11
Posts: 2
Last seen: 13 years, 7 months

Leaves curling upwards or inwards. So, what's the prognosis, doc?

#573318 - 07/20/11 05:59 AM (13 years, 8 months ago)

Ok,

Synopsis:

I'm getting back into it after an extended break (travelling, living, blah blah). So I admit, I might stumble on something simple. But anyway, I switched recently to LED from CFL, because, well, because I damn well felt like it. So my problem *could* be related to that, but I really want a reliable opinion.

I've searched for 'leaves curling upward' 'inward' and a few variations on the theme. So I just want tp add that I don't think it's a nutrient deficiency, & I'm hoping it isn't some sort of insidious disease I've never come across before.

Thanks for reading, please help agony aunt doctor person(s)...

and here begins the pre-req...

Soil Growers:
1. Are you growing from seed or clones?

Yes

2. How old are your plants?

It varies, from seed, this particular one is on the order of around 8 weeks. Clones are from a source that the original age of the mother unknown.

3. How tall are your plants?

Tall enough, thanks. Which is quite short, but I should think that's neither here or there with this problem.

4. What size containers are they planted in?

Variable, but quite small generally. Maybe a cup to a few cups worth of soil during this stage.

5. What is your soil mix?

The highest independently rated potting mix on the consumer NZ market presently. "Pot Power" by Debco.

6. How often do you water and what type of water do you use?

Tap water when they look thirsty or very thirsty. I go by the weight of the pot more than anything. When they feel a bit light weight, reckon it's about time.

7. What is the pH of your water?

Around 7

8. What kind of fertilizer do you use and what is its NPK ratio?

Natures Organic Fertiliser - General Garden

N : P : K : S : Ca : Mg

1:5:3 : 0:20:3 + trace nutrients

9. Do you foliar feed or spray your plants with anything?

Yes, but not often. I use half strength Nitrosol (a reasonably common organic liquid fertiliser concentrate)

10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant

lights")

Recently switched to LED, 90 watts from 1 light, in this situation.

11. How close are your lights to the plants?

Quite close, but not enough to burn, if that's what your driving at...

12. What size is your grow space in square feet?

I dont know precisely, but it's not much bigger than an average desktop

13. What is the temperature and humidity in your grow space?

Temp is hovering around 20 Celsius and just below.
Humidity, unmeasured, but enough to make the leaves sweat wherever they touch for too long, but not moist enough for mould. (although some mycelium has been noticed in the soil recently after the change to LED)

14. What is the pH of the soil?

around 7

15. Have you noticed any insect activity in your grow space?

Not particularly

16. How much experience do you have growing?

Your momma taught me everything I know. Which is nothing to scoff at, let me tell you. You ought to be proud, really.

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