Cal-mag Fertilizer

Cal-mag fertilizer

Derived from calcium nitrate, magnesium nitrate and iron EDTA, Cal-Mag Plus™ aids in the production of fruits and vegetables in fruit and flower-bearing plants. Prevents blossom end rot in tomatoes and peppers and tip burn in lettuce and cabbage.

When should I use Cal-Mag?

Cal-Mag provides vital micro-nutrients for heavy feeding plants, especially those that produce large amounts of blossoms or fruit. Apply Cal-Mag as a foliar spray or as a root drench during the growing season to plants to prevent deficiency diseases, or to treat those impacted by nutrient deficiencies.

What plants benefit from Cal-Mag?

Cal-Mag can be used on all plants. Cal-Mag is fully compatible with any soil and all growth mediums and can even be applied as a foliar spray for rapid uptake. Add Cal-Mag to every watering for a lush green canopy.

Should I add Cal-Mag to every watering?

Use with every watering as needed. Mix well and adjust pH accordingly. Shake well before each use. Add 1 tsp (5ml) per gallon of water, Mix well and adjust pH to 6.2-7.0 before application.

How do I know if my plants need Cal-Mag?

Calcium Deficiency If there is a deficiency of the mineral in the soil or nutrient solution, the growing ends of the plant usually show symptoms first. Localized rot and stunted growth are the most common signs of calcium deficiency.

Can you give your plants too much Cal-Mag?

Too much of this can cause a calcium deficiency, since the two are chemically similar. Don't panic – just make sure you use a coco nutrient and CalMag. Calcium deficiencies can also occur in hydroponic systems. Especially if you use soft or RO water with a general base nutrient.

Do you add Cal-Mag before or after nutrients?

When using Silica Blast, always add Silica Blast into your reservoir FIRST followed by Cal-Mag. If Silica Blast is not being used and Cal-Mag is, Cal-Mag should be added FIRST, then add the remaining nutrients.

Do you need Cal-Mag when growing in soil?

Calcium and Magnesium are considered secondary macronutrients. This means that a cannabis plant requires greater amounts of Calcium and Magnesium in comparison to micronutrients. Calmag is used in soil, coco and hydroponic applications.

Can I use Cal-Mag during flowering?

You should use 5 ml/gallon of Cal-Mag Plus during the vegetative and early bloom stages. During the halfway point of the flowering stage, you might want to reduce the application to 3 ml/gallon, to avoid adding excess nitrogen to the nutrient solution based upon your plant specific needs.

How often should I give my plants Cal-Mag?

Begin use just before bud development. Continue use as needed, not more than once per week. Maintain a pH range of 5.6 – 6.8. A pH outside this range can impact the availability of calcium and magnesium.

Can Cal-Mag hurt plants?

Using enough Cal-Mag Plus to provide this level of EDTA would easily kill the plants before the fungi or beneficial would be effected. At the listed application rates, Cal-Mag Plus provides a level of iron EDTA far below the level of toxicity, and is perfectly safe to use with beneficial microbes and fungi.

Is Cal-Mag the same as Epsom salt?

There is no major difference in the magnesium found in Epsom salts as opposed to say, Cal-Mag supplements. The major difference is Epsom is an all-natural product while bottled supplements are usually petrochemical-derived.

How much Cal-Mag do I use per gallon?

Shake before using. Use 1 tsp (5 ml) per gallon (4L) of water or nutrient solution. Application may be increased to 2 tsp per gallon if needed. For best results: Use in combination with your standard fertilizer program.

Can you spray Cal-Mag on leaves?

Foliar Application – CalMag can be used as a foliar feed to correct deficiencies relating to poor establishment or environmental problems. Add at a rate of 15mL/L and spray onto the leaves. Spray once per week until the issue is resolved. The recommended pH for foliar application is – 5-7.

Can you mix Cal-Mag with other nutrients?

Yes, cal-mag can be mixed with other nutrients, but using the correct ratio is essential.

What are the early signs of Cal-Mag deficiency?

You will notice symptoms in the form of curled leaf edges or dappled leaves with yellow or brown spots. In acidic soil, the plant will find it difficult to take in calcium and magnesium whereas, in highly alkaline soil, the phosphate ions react with magnesium and calcium making them difficult to be soluble in the soil.

Do LED lights need more Cal-Mag?

There always will be some cultivars that will require more calcium and/or magnesium when growing them under LED as compared to other light sources. So pay attention to how your plant responds to the new growing environment, check the VPD, and make adjustments (including less or more inputs) as needed.

Can Cal-Mag cause nutrient burn?

Yes, if you introduce too much CAL MAG at once or too often a build up can occur and this toxic build up (for the plant) can cause nutrient burn.

What are the signs of too much magnesium in plants?

Too much magnesium inhibits the uptake of calcium, and the plant displays general symptoms of an excess of salts; stunted growth, and dark-coloured vegetation.