Cal Carb Foliar Booster
Best calcium supplement for home gardeners growing heat-sensitive fruiting crops.
Boost your plant's health with Cal Carb Foliar Booster, a vital source of calcium for strengthening cell membranes and improving nutrient regulation. This formula is especially beneficial for crops like peppers, tomatoes, and watermelon, and helps reduce heat stress. Suitable for both indoor and outdoor environments, it's free from GMOs and harmful pesticides. Apply as a foliar spray, focusing on the underside of leaves, for optimal results. Xtreme Gardening products are designed to enhance plant vitality naturally.
$19.99
Owner Satisfaction
4.6
/ 5
Category Rank
1791
/ 4425
#1791 in Fertilizers
Price vs Category Average
-68%
Below average
Form
Foliar Spray
/ Foliar Spray
Who it's for
- Cultivators seeking a quick energy boost for plant health
- Gardeners needing an immediate fix for nutrient deficiencies
- Growers aiming for stronger, more resilient plant structures
Who should skip it
- Busy growers wanting a low-maintenance, set-and-forget feeding routine
- Beginners intimidated by precise mixing and application timing
- Gardeners looking for an all-in-one primary fertilizer solution
Performance breakdown
Cellular reinforcement
Calcium delivery effectively fortifies plant cell walls against environmental stressors.
Heat stress mitigation
Provides a reliable buffer for crops struggling in high-temperature conditions.
Application versatility
Performs consistently across indoor setups and diverse outdoor garden environments.
Ease of application
Simple foliar spray method makes regular maintenance straightforward for home growers.
Nutrient absorption speed
Quick-release formula ensures plants receive immediate access to vital calcium.
Compatibility constraints
Requires careful scheduling to avoid interference with other foliar nutrient programs.
Key Specs
Form
Foliar Spray
Fertilizer Source
Natural
Application Method
Foliar Spray
Target Plant Type
Lawn, Vegetables, Flowers, Trees and Shrubs, Houseplants
Fertilizer Form
Liquid Concentrate
Release Type
Quick Release
Organic Certified
False
Use
Indoor & outdoor environments
Features
- Enhances cell membrane strength
- Improves nutrient regulation
- Reduces heat stress effects
- Suitable for indoor/outdoor use
- GMO-free and pesticide-free
- Easy foliar application
- Leaves beneficial calcium residue
- Targeted application for fruiting plants
What customers say
Customers consistently highlight the exceptional quality and rapid effectiveness of Cal Carb Foliar Booster. Gardeners appreciate how easily the product mixes and applies, making nutrient delivery straightforward even for sensitive plants. The most compelling feedback centers on its reliability in quickly correcting calcium deficiencies, leading to visibly healthier growth and improved yields. Users feel confident relying on this booster as a simple, powerful solution for essential plant nutrition.
Know before you buy
This booster helps plants manage heat stress by strengthening cell membranes, which improves the plant's overall resilience and nutrient regulation during high-temperature periods.
No, the white residue is simply beneficial natural calcium. It is a normal result of the application and does not need to be washed off.
For the best results, apply Cal Carb alone. You should wait at least 36 hours before applying any other foliar nutrients to ensure the calcium is properly absorbed.
For optimal results, you should repeat the application every 5 to 7 days throughout the growing season.
For fruiting and flowering plants, mix 2 teaspoons of the concentrate per quart of water. For established plants that are not currently fruiting, use 1 teaspoon per quart.
Yes, it is suitable for both indoor and outdoor environments, including houseplants, vegetables, and ornamental trees or shrubs.
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$20