SKU: 77704931390
garden calcium spray

garden calcium spray CalCarb Foliar Booster 3 oz

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Description

garden calcium spray CalCarb Foliar Booster 3 ozXtreme Gardening CalCarb CalCarb is a revolutionary calcium carbonate foliar spray proprietarily derived from a naturally occurring compound. It utilizes a new form of nanotechnology which processes the compound to such a fine size that it is able to permeate the foliage of plants. Once inside the cell walls, CO2 is released as both calcium and usable carbon dioxide, increasing photosynthesis levels three fold. Both calcium and carbon are critical to

Xtreme Gardening®

CalCarb

CalCarb is a revolutionary calcium carbonate foliar spray proprietarily-derived from a naturally occurring compound. It utilizes a new form of nanotechnology which processes the compound to such a fine size that it is able to permeate the foliage of plants. Once inside the cell walls, CO2 is released as both calcium and usable carbon dioxide, increasing photosynthesis levels three-fold.

Both calcium and carbon are critical to plant development. Calcium is generally supplied through the soil and carbon enters the plant as carbon dioxide which is necessary for photosynthesis to occur. CalCarb is a unique form of a simple and very common compound that contains both calcium and carbon. Calcium carbonate or CaCO3 is used in agriculture throughout most of the world to adjust soil pH levels. But CalCarb is an unusual form of calcium carbonate that is highly unstable, converting to calcium oxide (CaO) and carbon dioxide (CO2) rapidly when applied to the foliage.

This unique phenomenon increases calcium availability to plants through the foliage, but more importantly, the CO2 levels directly outside and inside the stomata can rise threefold which is near the optimum for photosynthesis efficiency.

Easily Applied to the Underside of Foliage!

Stress Reduction and Plant Rescue - Forget to water? Didn't remember to bring that tender houseplant in before the first cold snap? If it is not too far gone, treat it with CalCarb and you may be able to rescue it. CalCarb helps in recovery by increasing photosynthesis in the foliage that is not too seriously damaged and by raising the surface pH of damaged foliage which deters airborne pathogens from taking advantage of the weakened cellular tissue.

May Prevent Tomato End-Rot and Powdery Mildew.

Product Specs:

Calcium (Ca) ...................................... 31%

Plant nutrients derived from: Calcium Carbonate

Wettable Powder Foliar Supplement

CalCarb Foliar Booster Application:
Foliar Spray For Indoor and Outdoor Use.

Established Plants:

Add 1 tsp per quart (liter) of water (1 tbsp per gal) into the sprayer. and mix well. Spray foliage focusing on the underside of plant leaves.

Repeat weekly.

Note, Calcarb leaves a beneficial white residue of natural calcium. it may be rinsed off after 36 hours, but let on will achieve the best results.

Calcarb is best applied alone, wait 36 hours before applying other foliar nutrients.

Clean sprayer after every use.

Flowering & Fruiting Plan:

Add 2 tsp per quart (liter) of water. Mix well and add to the sprayer. Spray focused "pop-shots" on the underside of outermost leaves.

Calcarb need only be applied to 6-12 leaves. No need to saturate the entirety of foliage.

Avoid fruits and flowering bodies!

Shipping Notes
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Exchange/Return Notes
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SKU: 77704931390

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4.2 ★★★★★
Based on 14 reviews
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Verified Purchase
Courtney M.
Battle Creek, US
★★★★★ 5
Buy them!
Ok I was a little hesitant based off these reviews but I decided to try them anyways. OMG I am a chronic face picker and cause sooo much scarring. And I always do it right before summer which causes horrible dark spots that take years to fade. Well I had one that was in a particularly noticeable spot and omg after only 3 days…3 it looks so much better with these patches!!! Don’t get me wrong it isn’t gone but for 3 days that is unreal. I will be using until it’s gone for sure!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
T
Verified Purchase
TAY
Los Angeles, US
★★★★★ 4
Subtle but works!!
Okay there are PRICEY for the small amount you receive. I believe they work for sure and will buy them again but which they would put a FEW MORE in a pack because they are not like miracle patched and you definitely need two packs to see a significant difference.
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Reviewed in the United States on March 11, 2024
A
Verified Purchase
Alissa
San Leandro, US
★★★★★ 3
Did nothing for hyperpigmentation, worked well on active blemish
I use these for an active blemish and they work well for reducing inflammation and redness. They are marketed for hyperpigmentation, but they didn’t seem to have much of an effect on lingering redness from an old breakout after a few uses so I decided to use them on a whitehead that popped up on my chin. I bought two packages and had passed the return window so I figured couldn’t hurt. After a few hours with this patch on, the whitehead and surrounding redness virtually disappeared. They are almost invisible on the skin IF you can remove them from their clamshell packaging without scrunching up and wrinkling the edge of patch. BIG IF!!! Most of the time I mess up the edge of the patch making the wrinkled edge visible on my face. I wear them around the house so I don’t really care about that, but it’s worth mentioning. You have to remove them from the packaging VERY carefully to keep the patch smooth. I’ve been mostly unsuccessful at removing them without scrunching up an edge. Oh well. Peach Slices makes a similar product for acne, “deep blemish microdarts”. I haven’t tried those, nor do I plan to because the amount of product that you get for either kind of micro dart is not a good value to me. I wish these were less expensive. I do like the way the micro dart feels when you apply it- kind of a satisfying stinging sensation- like the ingredients are really penetrating. I would not call it painful. A moment of sting and it’s on there doing it’s job. It stays on well while doing basic daily activities (like doing the dishes, working at a desk). Can’t say how it would hold up to something more vigorous like a jog or bike ride or anything that would make you break a sweat. I like the product and the result on blemishes, but I can’t justify the cost. A warm compress and followed by a vitamin C serum on a blemish works just as well and it’s way more cost effective, albeit less convenient. Also, the ingredients in the product description are incomplete. See photo- they contain Butylene Glycol which is sometimes irritating to my skin. Luckily, these patches didn’t irritate me. Having to 3rd party check the ingredients for cosmetics from Amazon irritates me though 😒 If these are affordable for you for the occasional blemish, I would recommend. Did nothing for hyperpigmentation and way too expensive for me to combat a full breakout or even a daily random pimple. I’ll use the ones I have but would not purchase again.
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Reviewed in the United States on June 8, 2021
A
Verified Purchase
Amazon Customer
Grantham, US
★★★★★ 1
Didn’t Work for Me
This purchase was a complete waste of time and money for me. The dots did absolutely nothing to reduce the color of a sun spot on my cheek. I used them according to the instructions for consecutive days. The dots are gone, but the spot on my skin remains as dark as before. Maybe they work better for pimple discoloration.
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Reviewed in the United States on June 2, 2026
E
Verified Purchase
eileen
Natrona Heights, US
★★★★★ 5
Really works…
I feel like this company and its product. I used these and I can honestly say that it works and worth the money
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Reviewed in the United States on June 7, 2026

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