Sick Plant Cannatonic - excess or deficiency - help appreciated
Good afternoon friends
I am unsure whether this is a deficiency, or an excess. Looking at the diagnosis guides in the forum, I'm assuming too much/too little calcium maybe?
Dark Wizard Cannatonic
Seeds Genetics : G13 Haze x MK Ultra
Genotype : 50% Indica / 50% Sativa
THC : Low
CBD : High
Height : Medium
Suitability : Indoor, Outdoor
Flowering : 8 – 9 Weeks
Flavour : Sweet wood
Yield : 500 gr/m2
Indica / Sativa : 50% Indica / 50% Sativa
Breeder : Dark Wizard Genetics
Smell Level : Low
Type : Feminized
Feed and medium
Started in typical seedling compost, and then moved on to a mix of garden centre compost and some home made compost (mostly kitchen scraps composted over the last few years, with a very healthy worm population).
Augmented with some 46-0-0 nitrogen in the veg stage.
20/03/2022 - 7-7-7 in water
08/04/2022 - 5-5-10 in water
This plant was started in late October, 2021 and stayed in veg until 20/03/2022 as it was too tall for the stretch, so had to wait until I had a new space.
It's now 1.65m tall.
It had red mites mid-late March, but I treated that with neem, dish soap, and potasium carbonate spray, which solved the problem.
It has been relatively healthy up until now, aside from a nitrogen deficiency a couple of times.
I use tap water, which is:
Hardness Information: Total Hardness level of 18 mg/l Ca, classified as Soft
- 45 parts per million
- 3 Clarke degrees
- 5 French degrees
- 3 German degrees
This "rust" appearance started about 3 days ago on one leaf, but is now appearing on several leaves.
All help is really appreciated.
How often have you been watering? Have they been more- wet or dry?
Was this compost aged or still in the process of breaking down?
A few things jump out in this grow. The leaves have a good bit of downward clawing indicating a possible excess nitrogen concentration in the soil. That 46-0-0 ammonium nitrate would be a no go for me in growing cannabis especially if you’ve planted in compost. The “rust” color areas are most probably calcium deficiency caused by some lockout issues in the soil from too much of something. This is probably going to need to be flushed thoroughly so we can get a good starting point. The watering frequency is probably way too high as well. Cannabis in soil likes to cycle from being fairly wet to fairly dry. A good practice is to only water your plants if the pot weigh only half of what a fully watered plant weighs. You might be killing these with kindness.
Definiently a lookout that's all i can say, agree with monkeydo that 46-00-00 ammonium nitrate is a no go for me.
This is the nitrogen product that I used a few months ago:
URPril™ 46-0-0 Slow Release Nitrogen Fertiliser TOP DRESSING or WATER SOLUBLE Prills Form. Grass Lawn Shrub Tree Plant Foliage BOOST
I probably used a teaspoonful as a top dress.
Just an update for you:
I followed the suggestions of continuing to water as necessary and let the plant complete it's flowering to the stage that i wanted.
I was able to harvest approximately 90g of bud, which has since dried, is really helping me with my pain management.
During the day I am able to dose low enough to help with the pain, without impairment.
During the evening I'm able to enjoy a slightly greater dose for an enjoyably stimulating and relaxing buzz, whilst still helping to relieve the pain.
I took some cuttings that have established themselves, and so I hope to have a future harvest to keep my problems under control.
I'm currently enjoying the Hermaphrodite episode of the podcast, fab stuff!
Thank you, Noodle.
Our forum is free to join. We are an international cannabis forum that helps people all over the world grow their own personal supply of cannabis. Through our site you will find cannabis breeding forums, cannabis deficiency forums, indoor cannabis growing forums, and much more.
We are a home growers cannabis forum, and we only allow people who grow cannabis for personal use to be members. Our mission is to help you grow your own cannabis. We do not buy/sell/trade cannabis, or equipment for growing cannabis. Our site is strictly a cannabis smokers forum, cannabis growers forum and forum for medical cannabis users.
Any member who is suspected of growing cannabis for commercial gains will be banned immediately.
Please read our forum rules, and enjoy the site.
Find us on all social networks! Just search for Percys Grow Room