mineral suplementation?

Ive been told that Cal/Mag supplementation is always a good idea in fairly large plants as well as needed in outdoor grows . First off is this true? Do I need to use a supplemental form of cal/mag? If it is a good idea to use, I bought a supplement from my nursery here and its a water soluble soft rock phosphates. calcium 23%, Mag 0.68% iron 1.56% and potassium 0.88%. Does this sound like the right stuff for the job? It says to foliage spray this on the plants but should I just feed it to them by adding it in on fertilizer days? thx for any advice. girls are 2.5 months old 3 plus feet tall. Im growing outdoors, in soil using Advance nutes sensi line and added b52 and rooting simulators. thx all.

i know from experience that most soils in outdoor situations are almost always calcium deficient - since calcium is the main compound assisting plants in accessing and transporting
nutrients it is almost always best to add calcium to your soil i use powdered oyster shell. The soft rock phosphate you have contains colloidal minerals, minerals that are liquid or suspended in liquid form, they are really small in size
so, yes, will be absorbed by the plant in a foliar spray ( and your skin ) i haven't used soft rock, but use another rock product called rock dust, i sprinkle it around on the ground, and it releases positively charged elements which are supposedly more
readily absorbed by plants ...... the chemical process is different with the rock dust but i think the results would be similar ... although 23% calcium is alot, my rock dust says 5.8% calcium, 6.2% mag, 10.5% iron, 1.8% potassium ...

secro said:

i know from experience that most soils in outdoor situations are almost always calcium deficient - since calcium is the main compound assisting plants in accessing and transporting
nutrients it is almost always best to add calcium to your soil i use powdered oyster shell. The soft rock phosphate you have contains colloidal minerals, minerals that are liquid or suspended in liquid form, they are really small in size
so, yes, will be absorbed by the plant in a foliar spray ( and your skin ) i haven't used soft rock, but use another rock product called rock dust, i sprinkle it around on the ground, and it releases positively charged elements which are supposedly more
readily absorbed by plants ...... the chemical process is different with the rock dust but i think the results would be similar ... although 23% calcium is alot, my rock dust says 5.8% calcium, 6.2% mag, 10.5% iron, 1.8% potassium ...

Click to expand...

Thx for the reply. I will use it at a half strength and see how they do with it.

killer43 said:

Thx for the reply. I will use it at a half strength and see how they do with it.

Click to expand...

well I sprayed my girls and when it dried I was left with a mud covered plant,lol. I then had to wash that stuff off them. ill add it to fertilizer day on a monthly or bi monthly basis. thx for help.

Marijuana, can be foliar fed, but being sensitive to nute burn, it's not advisable with exeption, of a very practiced hand. It is however a benificial, as well as almost lost art. Pick a plant, research the subject of folliar feeding marijuana, And do some experimentation. cal/mg Supplementation is important when feeding micro nutes to your plants, do it before you plant, mix it into the pot or space you plan to grow in. Do it spareingly, don't overdose them. The same key rule applies here as well, "less is more". It is much easyier to apply more than to remove the eccess. Always start with 1/4th or less, of what a label reads. Very few nutes are formulated for growing pot exclusively. So when you apply micros do it seperate from your regular regiment. Let it dry and water with fresh water before administering micros. Sometimes when diffrent types of chem nutes are mixed it changes the characteristics of the soil giving you yet another problem to deal with.