Plant discoloration and curling

Hello, My plants were in a too small pot. I rehomed them to a bigger pot 2 days ago but they’re not looking well. It started while they were in the old pots but I haven’t seen any improvement. Any suggestions


It is perfectly normal for the lower leaves to yellow, dry up, and eventually fall off. It’s not indicative of a problem.

The upper growth looks yellowed. Do you know your pH and PPM? What product(s) are you feeding and what brand of soil are you using?

I don’t know my ph or ppm. When it was in the small beginning pots I fed them cal-mag and Fox Farm big bloom. It was in miracle grow. Tuesday I moved them to the 5 gallon in happy frog soil & have only gave it cal-mag once

Good. MG products and cannabis are not a good match.

All Big Bloom contains are micronutrients (iron, copper, boron,…) You plant needs nitrogen, potassium, and phosphorous. If you are going to use the FF nutes, then you should also be feeding Grow Big and Tiger Bloom.

It will be very important to monitor and manage pH and PPM, particularly if using FF nutrients. They are full of mineral salts that will (emphasize will) cause pH problems that must be managed. Apera and Bluelab both make quality pH and PPM meters.

No need to feed for about 4 more weeks if using Happy Frog soil. Monitor your runoff PPM and begin feeding when the PPM dips below 1,000.

I expect the yellowing was due to pH problems that occur with Miracle Grow soils. Too low of a pH will begin locking out nitrogen, among other nutrients It’s nitrogen that supports the darker green leaf color.

Thank you so much. So once it’s time add all 3 nutrient sets? Also can I give Cal-Mag every feeding

Correct. All 3 plus cal/mag.

Thank you so much

Absolutely chasing your tale trouble shooting without knowing ph of input.
Even if everything else is done perfectly correct, if ph is to far out, all kinds of stuff can happen.

Knowing ppm/tds is also super helpful but there’s ways of working around not have a tds meter.
But ph is a different beast. The only way to work around not managing ph is get extremely lucky or have an amazing living soil going…

Highly recommend getting a digital ph and tds meter.
Cheaps sets for under $20 for both.
They work but aren’t water proof so the first time you drop them in the water they are toast.
Highly recommend getting a good ones, many options for $50-$100 bucks thats water proof, more accurate and easy to use.
These are what I use.


Bluelab is kinda pricey but they are great instruments. The bluelab trunchron (in my opinion) is the best tds meter made for horticulture purposes.
It has no buttons to figure out, never needs calibration, uses AAA batteries, and gives readings in 4 different scales simultaneously, while serving as a stir stick when mixing nutrients as its very long and 100% water proof.

These 2 instruments are often overlooked, it’s not something that come intuitively but they are a game changer for preventing issues and all most a necessity to correct issues if they arise.

Thank you so much. So the one that comes on the soil moisture meter must not be that accurate?

Correct unfortunately :confused:
This again is a very common thing fir alot of folks at first. I think it should be illegal to sale them myself :sweat_smile:

Lol :joy::joy::joy::joy: