HELP! Purple Gelato Green House

I have a buddy of mine that his plants are some problems. Purple Gelato plants that seems like they stopped growing and the leaves are starting to curl and some tips seems to have some burn. Tried giving them a good flush but doesn’t seemed to work. Using Miracle Grow about 1 gallon per 2 weeks with about .5 gallons in between feedings. From some research I’ve done, it could be russet mites. Trying to figure out the best way to save the plants if possible. I’ve heard of a mix of Hot water, Dawn dish soap, Neam oil and Insect killer soap or a soft bodied spray. Another Product I’ve came across is Trifetan Crop Control, Trying to stay organic anyways that I can use all the way to harvest. Has anyone came across this kind of problem. Any input would be great.

I would get away from miracle gro its not cannabis friendly


Have you seen any mites? You will need magnification to see them. They like to hang out on the bottom of the leaves.

It looks like only the uppermost leaves are affected or is it the whole plant?

Has is been hot where you are growing? Windy? Low humidity?

I used miracle grow nutrients my first grow and the plants made it to harvest. I know there is a grower here that uses nothing but miracle grow products and has great success. Sorry I don’t remember their name.

If you can, please fill out a support ticket so everyone here knows more about your grow. I don’t have it handy but if you use the search function you should be able to find an example.

Best to you.


@Dr.ofSmokology I believe was mg user

i concur with @JaneQP

looks a little like heat stress honestly. typically i don’t see leaves react to pests by curling.

it could be the nutrient mix too. i’m seeing some minor tip burn


COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

-What strain, Seed bank, or bag seed (photo or auto)
-Age of plant
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
-Vessels: Type and capacity of container (fabric, plastic, etc)
-PH and TDS of Water, Solution, runoff (if Applicable)
-PPM/TDS or EC of nutrient solution if applicable
-Method used to measure PH and TDS
-Indoor or Outdoor if indoor, size of grow space
-Light system List brand and wattage/spectrum
-Actual wattage draw of lights
-Current Light Schedule
-Temps; Day, Night
-Humidity; Day, Night
-Ventilation system; Yes, No, Size
-AC, Humidifier, De-humidifier,
-Co2; Yes, No

If growing Hydro some additional questions:

-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution

Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.


I haven’t seen any mites under the leaves. These plants get watered by hand and try and get inspected a few times a week. It’s been almost the whole plant but mainly just the water/fan leaves.

Weather- It has been pretty nice recently mid 50s with a low of mid 30s with high humidity. Todays weather is going to be about 60s during the day.

-What strain, Purple Gelato Photo (most likely clone looking at the way the branches are.
-Age of plant- unknown, Potted in 15gal pots on November 15th, 2021
-Method: Premium Potting mix from a local landscape company
-Vessels: 15 gallon totes
-PH and TDS of Water: Unsure
-PPM/TDS or EC of nutrient solution if applicable _ Unsure
-Method used to measure PH and TDS: none
-Indoor or Outdoor: Greenhouse, 15ft x 6ft
-Light system List brand and wattage/spectrum: LED shop lights x2
-Actual wattage draw of lights: unknown
-Current Light Schedule: about 12 hours at night, Kept on during the day but other then that natural sunlight.
-Temps; Day- about 50-60s, Night- mid 30s, Doesn’t snow here in dead center of California.
-Humidity; Day- 80s-90s about, Night- About the same as day. Don’t vent during the day or night
-Ventilation system; Yes, side vent flap
-AC, Humidifier, De-humidifier: none
-Co2: None besides natural

It seems like also, growth has came to a stop. Posting for a friend.

1 Like

It doesn’t get really hot this time of year until we hit summer and the heat gets pretty bad. These plants are a friend of mine and I was posting for him to see if I could figure out what could be causing it.

Water schedule is about 1 gallon of city water with 1tsp(recommend dose for indoor plants) of miracle grow per week and about .5- 1 gallon of straight city water in between feedings. Once the problem started, he gave them a good flush thinking it could be to much fertilizer but the problem was still there.

you could try to flush it out but with MG it could release more nutrients and make things worse.

It doesnt look terrible, id just keep the course and hope she gets used to what youre feeding her.

check out captain jacks dead bug for an organic pest control product.

also, i hear good things about real growers grow dots, if you are looking for a dry amendment feed nutrient.


Interesting. I haven’t heard of that one before. Myself, I’ve been using Growers Ally Spider Mite and fungicide concentrate and so far so good. I was just informed about the hot water mix (as I said in my original post) or another one I’ve came across was Trifetan Crop Control. Either one I haven’t tried.

I’ll check into the grow dots. I think I’ve heard of them before but I can’t remember.

1 Like

i’ve just linked two journals documenting grow dot’s versus something else.

1 Like

Awesome!! Thank you. I’ll be sure to check them out.

First thing I would recommend is getting a ph pen and ppm meter. If your water is not right going in around 6.5 then you are blind, so can do everything else right but you will have root lock. Where you water is off the plant can Not absorb anything your are feeding it, and you are honestly starving her from the the inside out. The TDS meter or ppm meter will help you know how much you need to feed, it measure how much good or bad stuff you are feeding, but like above if your are not ph your watering going in, you can have lock out or in mobilized all the good your are giving and wasting what ever nutes your are feeding, Ali have you flushed yet ? To make sure there are no salt build up yet ?

I agree it looks possibly environmental.

U said to LED shop lights… can you find any labels or possibly a model online? It would help alot.

Also how far away are the lights from the plant canopy?

@Kingkupa I haven’t tested the water. We are on city water and the last couple grows came out fine besides being light and airy. Done one flush thinking it was to much fertilizer when first noticed. Haven’t done any pest or fungicide spray since these plants were transplanted into 15gallon totes.

@PurpNGold74 I ended up showing the photos as posted to a local hydroponics store where I go for everything and he said possible russet mites. The lights were bought from Lowes and they’re around 4,000 lumens each x2 , 4ft long and are about 15inch or more above in the center of the green house about 6ft wide inside by 15ft or more. They were used during the last couple grows and worked fine. This is the first time growing in colder weather and don’t use a heater.

1 Like

Light and fluffy buds could be a multitude of issues, maybe your ph is of a little bit allowing your plants to take all the Nutes possible, and also lighting plays a big part, not familiar with you light I use LED , I’m under the impression that Lumens are a measurement of brightness of a light. Not ppfd, which measure photons , of certain wavelengths, and the certain light wavelengths are what you need to properly give you plants optimal energy for photosynthesis

1 Like

@Kingkupa It could be a little bit of the PH. Being a green house, the only time lights are on is at night or over cast days. Being one of buddies plants, he does his own thing and myself having a grow going of the same plants mine seems to be doing alright. Thinking it could be a little bit of the PH along with the lighting, it could also be the fertilizer being not applied in the right order due to having light fluffy buds. I’m thinking about ordering a PH pen and a TDS/PPM meter but I wouldn’t know the exact numbers mean. I know it’ll be learning curve for sure.

1 Like