Grotek Cal-Max, 1 gal

Calcium, Magnesium, and Iron Support During High Heat

Grotek Cal-Max supplies calcium, magnesium, and iron during high temperature conditions and periods of accelerated growth, when plants need extra support to keep up with demand.

This 1 gallon size works as a foliar spray, which is especially valuable when root-to-leaf translocation is difficult under stressful conditions.

Key Features & Benefits

• Calcium and magnesium — supports structural and metabolic plant functions
• Chelated iron included — remains available even under stress conditions
• Foliar spray application — works even when root-to-leaf translocation is difficult
• Treats and prevents deficiencies — addresses issues like tip burn and blossom end rot
• 1 gallon size — convenient for small to mid-size foliar programs

Who Should Use Cal-Max

Growers facing high heat or accelerated growth conditions, or those seeing early signs of calcium or magnesium deficiency, will benefit from Cal-Max's targeted foliar support.

Common Deficiencies Cal-Max Addresses

Cal-Max is commonly used to treat or prevent deficiencies such as tip burn in lettuce and blossom end rot in tomatoes, both linked to calcium availability under stress conditions.

Frequently Asked Questions

When is the best time to apply Cal-Max?

Apply during high temperature conditions or periods of accelerated growth when deficiencies are more likely.

Why use a foliar spray instead of root feeding?

Foliar application works even when root-to-leaf translocation of calcium is difficult under stress.

What deficiencies can Cal-Max help prevent?

It helps treat and prevent issues like tip burn in lettuce and blossom end rot in tomatoes.

Can I use Cal-Max alongside my regular nutrient program?

Yes, it's designed as a supplemental foliar treatment alongside an existing feeding program.