Adding magnesium

Holeleeshet

Well-Known Member
I’m trying to figure out how to add magnesium to my plants without having to add big blooms quiet yet. I’m in week 3 of veg and I used miracle gro soil with those pellets so I’m holding off on adding nutrients until it takes in most of the extended releases. Instead of 15 ml every other watering like it recommended I’m gonna dilute it to half the amount to prevent leaf burn. I just noticed it was lacking mag from some of the leafs edges and purple stems are in certain spots.
 
I’m trying to figure out how to add magnesium to my plants without having to add big blooms quiet yet. I’m in week 3 of veg and I used miracle gro soil with those pellets so I’m holding off on adding nutrients until it takes in most of the extended releases. Instead of 15 ml every other watering like it recommended I’m gonna dilute it to half the amount to prevent leaf burn. I just noticed it was lacking mag from some of the leafs edges and purple stems are in certain spots.
Foliar feeding with kelp can help, as well as .5 -1 teaspoon epsom salt in a gallon of water as a drench. I'll also dilute a quarter teaspoon of epsom in my foliar mix if I'm behind and lacking magnesium.
 
I feed them 1/4 teaspoon per gallon of water, root drench, not foliar, when I have a deficiency, seems to work after a few doses, then I dial it down a bit.
 
Wow. A tablespoon?
“Quick fix for magnesium deficiency in cannabis plants
A magnesium foliar spray is made by mixing one tablespoon of Epsom salts with four litres of water. This mixture is then sprayed onto the plants every three days, with a clean water spray every ten days to ensure residue does not build up on the leaves.”

Finest mist possible. Don’t make a habit of it. Feed it next time.
 
i use ro and i just add 1/4 strength cal mag with each watering.or feed cleared up my issue within 2 feeds (4days)
its about 60ppm of cal mag.
 
whaaaaaat you dont like lavender smelling soap buds? lol
id only go a tblspn on a heavy deficiency. just an early issue id do teaspoon instead.
That's funny because I just got done cleaning a bunch of trays and irrigation tubes / pumps with Dr. Bronners lavender soap. That stuff is aggressively lavenderized. I meant to buy the scentless hemp kind, and now I have to find ways to use it up.
 
Would kosher salt work where it’s iodine free or is the iodine required. I think I’ll foliage spray or go with a half a teaspoon cause there’s only a few with rule and lit leaves cause I don’t wanna put to much of that in the dirt. Then my ph would be way out of balance and I’d never get it fixed. It’s just these two that come off the same branch. I though about just topping it clean offf and starting two new lines but that’s losing time and effort.
 

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IMO a tablespoon per gal is way too much despite what the internet says. I'm pretty sure you will be close to 400 ppm of mag/sul at that rate. Yikes! I'd stick to a tsp/gal max myself or better yet just measure poms.
 
Would kosher salt work where it’s iodine free or is the iodine required. I think I’ll foliage spray or go with a half a teaspoon cause there’s only a few with rule and lit leaves cause I don’t wanna put to much of that in the dirt. Then my ph would be way out of balance and I’d never get it fixed. It’s just these two that come off the same branch. I though about just topping it clean offf and starting two new lines but that’s losing time and effort.
No. Kosher salt is sodium.
 
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