BlueGold® C4 Calcium (OMRI Listed) - BlueGold® by Eden Solutions

Shop BlueGold®

BlueGold® Alfalfa Blend
June 16, 2019
BlueGold® Hat (Free Shipping)
June 26, 2019

BlueGold® C4 Calcium (OMRI Listed)


Certified Organic Liquid Micronized Calcium Carbonate

BlueGold® C4-Calcium is for foliar use to see immediate Calcium uptake via Apical’s Plant Sap PPM Test. BlueGold® Cal-King is the super-concentrated version of BlueGold® C4-Calcium for fertigation. BlueGold® C4-Calcium is OMRI Listed.

We also offer Flat Rate Freight Shipping up to 1,200 lbs. To place freight orders or for more information please call us on 1-877-732-5360 or email For freight quotes please contact

Label PDF: Download

MSDS PDF: Download

OMRI Listed: Download

Cost per Acre per PPM Gain




4″ TO 24″ CROPS

24″ TO 60” CROPS

60″ – 120″ CROPS




SKU: N/A Categories: ,



BlueGold® C4-Calcium is an extreme form of our BlueGold® Cal-King in terms of micronization. Agriculture is a unique form of labor, but one that limited the same as all others: time and budget. Inputs dictate the available nutrients, and when dealing with an excess (i.e., Magnesium) that is locking out an extremely vital nutrient like Calcium, yields don’t have 1 to 3 or more years to wait for nature to take its course to process a dry input of Calcium Carbonate. In these cases, working in fertigations and foliar applications of nutrients like Calcium via BlueGold® Cal-King can drive the plants to success while the soil is being corrected. The third limiting factor unique to farming is nutrient emergencies. You can be in the final stages of the Vegetative cycle, but the plants desperately need a boost in PPM of Calcium.

However, the input of a Calcium source like BlueGold® Cal-King can be detrimental as it will inherently be inputting Calcium into the soil at a time when a switch from Veg to Flower is trying to occur. Calcium inputs in Flower will push out Potassium, the ‘sizer’ of your fruit. In such emergency cases, a farmer needs to be able to supply Calcium in a small amount directly to the plant, without changing the soil PPMs. Enter BlueGold® C4-Calcium, as extremely micronized Calcium source – below 2 microns. A blood cell is 8 microns and BlueGold® Cal-King is 10 microns. This source of Calcium can be applied directly to a plant to meet emergency needs without effecting soil PPM of Calcium. Due to its extreme micron size, the Calcium in C4-Calcium can immediately enter the stomata of a plant in a bioavailable form.

BlueGold® C4-Calcium, although rarely if ever used, is an excellent tool to have. If plant Phosphate PPMs are proper, C4-Calcium can be used to quickly adjust the Calcium PPMs in the plant during critical growth stages.



BlueGold® C4-Calcium should only be applied in accordance with an Apical Soil/Plant Sap Analysis. Results should dictate ongoing application rates. DO NOT COMBINE WITH PESTICIDES, CHEMICALS, PLANT CLEANERS, HIGH Na SALT/CHLORIDE GROW MEDIA. Ask us how to qualify for guarantees. We DO NOT advocate BlueGold® C4-Calcium use with any synthetic/chemical.

Weight 17 lbs
Dimensions 7.2 × 5 × 10.6 in

32oz, 1 gallon, 2.5 gallon, 5 gallon


There are no reviews yet.

Be the first to review “BlueGold® C4 Calcium (OMRI Listed)”

You may also like…