Xtreme Gardening Calcar Foliar Booster | 3oz - (Case of 12)

Foliar Calcium & Carbon Dioxide Booster, 3oz

Heat stress and calcium deficiency often show up together on fruiting crops, since both weaken cell membrane structure and interfere with how a plant regulates nutrient movement under high temperatures. Xtreme Gardening Calcar Foliar Booster supplies a readily available source of calcium and carbon dioxide applied directly to foliage, supporting cell membrane strength and nutrient regulation during hot growing conditions.

This 3oz size suits a home grower applying foliar treatments to a handful of plants during hot stretches.

Key Features & Benefits

• Readily available calcium — supports cell membrane strength when applied directly to foliage.
• Carbon dioxide source — supports overall plant metabolic function alongside the calcium supply.
• Heat stress support — helps plants regulate nutrient use under high-temperature growing conditions.
• Indoor & outdoor use — works in both controlled indoor environments and outdoor field conditions.

Who Should Use Calcar Foliar Booster

Growers of peppers, tomatoes, watermelons, and other fruiting or heat-sensitive crops that commonly show calcium-related stress symptoms are the best fit for a foliar calcium booster. It suits both indoor growers managing heat from lighting and outdoor growers dealing with seasonal high temperatures.

About Xtreme Gardening

Xtreme Gardening's Calcar line is a foliar calcium and carbon dioxide supplement, distinct from the company's Mykos mycorrhizal fungi and Azos bacterial lines. Its products are cultivated and packaged in California and distributed through several hundred garden supply dealers.

Frequently Asked Questions

What does Calcar Foliar Booster provide?

It provides a readily available source of calcium and carbon dioxide applied directly to plant foliage. Both nutrients support cell membrane strength and help regulate how the plant manages nutrients under stress.

How is Calcar applied?

Mix it into a foliar spray solution and apply directly to leaf surfaces rather than through the root zone or reservoir. Foliar application allows faster uptake of calcium than a root drench during periods of active heat stress.

What crops benefit most from a foliar calcium booster?

Peppers, tomatoes, watermelons, and other fruiting crops are especially prone to calcium-related stress such as blossom end rot, making them strong candidates for a foliar calcium supplement. Leafy or non-fruiting crops can also benefit, though the effect is usually less visible.

Can Calcar be used both indoors and outdoors?

Yes, it's formulated for use in both indoor growing environments, where heat from lighting is a common stress factor, and outdoor gardens dealing with seasonal high temperatures. The application method stays the same in either setting.

Does Calcar replace a base calcium-magnesium supplement?

No, it's a foliar-applied booster meant to support plants during heat stress rather than replace a root-zone calcium-magnesium supplement in the base feeding program. Most growers use it alongside, not instead of, their regular cal-mag routine.