Foliar Feeding

It has been known for many years that plants are able to absorb essential elements through their leaves. The absorption takes place through the stomata of the leaves and also through the epidermis. Movement of elements is usually faster through the stomata, but the total absorption may be as great through the epidermis. Plants are also able to absorb nutrients through their bark.

The following elements have been successfully used to supply nutrients for plant growth by apply them as foliar sprays to the leaves:

Primary Nutrients
Nitrogen
Phosphorus
Potassium

Micronutrients
Nitrogen
Phosphorus
Potassium

Secondary Nutrients
Magnesium
Calcium
Sulfur

hey seedless, nitrogen,phosphorus,potassium,magnesium,sulfur are MACRONUTRIANTS

I thought co2 o2 and such was macrO?

nope......