Xtreme Gardening CalCarb is a foliar spray derived from naturally existing calcium carbonate. It provides the carbon dioxide needed to achieve optimum photosynthesis performance – effectively maximizing your plants growing potential. 

This new form of nanotechnology processes the compound to such a fine size that it is able to permeate the foliage of your plants.

Once CalCarb enters inside the plant cell walls, CO2 is released as both calcium and usable carbon dioxide, increasing photosynthesis levels three-fold!

For indoor gardening, CalCarb delivers what no other product can – natural, time-released CO2, without the use of tanks or propane/natural gas burners.

The Ca (calcium) strengthens cell walls, making them more durable in harsh conditions, especially drought.

Because plants sprayed with CalCarb recieve carbon dioxide via the intercellular space, the stomata of the leaves no longer have to remain open trying to fixate it atmospherically. The stomata can now remain closed, significantly lowering transpiration and effectively increasing plant water retention by up to 75%! This means that your plants will survive with less water – up to 75% less water! Save money on irrigation during the hot spring and summer months.

Application Rate: use 1 to 2 tablespoons per gallon water and spray undersides of leaves. Repeat weekly or bi-monthly as needed. Safe to use during entire growth stages of your plants.