There ’s more to inseminate your garden than N - P - K. Calcium , too , is all-important to a goodish garden territory . Store - bought agrarian quicklime is one atomic number 20 - rich grease additive . eggshell from your daily morning omelette is another . But have you think about what ’s in your medicine cabinet ? The same atomic number 20 supplement you take for healthy pearl and teeth can help keep your plant life ' vigorous increment .
Plants Need Calcium
Calcium is one of the six macronutrients needed in large quantity for healthy plant maturation . It ’s important for flora growth at the cellular stratum , and its front or absence seizure find to a great extent the power of the plant to serve other macronutrients .
Plants eat atomic number 20 from the soil at a rapid rate , so you ’ll need to replenish the calcium sporadically through the season . look on for signal of Ca insufficiency : yellow leave that curl at the edge , stunt flora development and blackened shoots . Ca deficiency first show in new emergence but will unfold to older leaves if want persists . If your potatoes wo n’t get chubby , if your beetroot run to fork , if your dinero leaves develop brownish tips or if your tomato ' and pepper ' blossom terminate get going to rot , it may be a sign you need to supply calcium to the filth .
Liming the Soil
For great - scale crop , farmers birdlime their fields to sweeten the grime ( raise its pH ) and to add calcium . " Lime " is a generic condition which could advert to one of several products . Quicklime , or calcium oxide , is one of these . It ’s fast - playing but can damage plant easily with overexploitation . Another form of liming , one that ’s safe but slower to take force , is the enjoyment of soil limestone , anticipate agrarian lime ( " aglime " ) . Chemically , it ’s atomic number 20 carbonate .
Effects of Calcium Tablets
Ca supplement come in different molecular combining for human wasting disease . One of these is calcium carbonate . As you might expect , vanquish calcium carbonate tablets will have a similar effect to sum up agricultural calcium hydrate . It may have an unwanted additional effect on your budget , however ; atomic number 20 addendum are n’t tawdry . But if you arrest study calcium supplements and retrieve yourself with a lot of leftover tablets , try prey them to your plants .
Your medicament cabinet may contain another potential source of Ca carbonate for your garden : antacid tablets .
Best Practice
Adding calcium carbonate pad of paper is a practiced fashion to help specify the soil before planting , and adding them in modest amounts throughout the season can aid maintain Ca layer in the ground . Calcium tablet ( and ballock shells ) can also help if you ’re seeing blossom end decomposition or other symptom of Ca deficiency in a few of your plants . But if the symptom are widespread or advanced to the dot of affecting sr. ontogenesis , you ’ll stand a honorable chance keep your garden with a conservative software of quicklime .
Be Careful
Note that bloom end bunkum may not indicate a deficiency of atomic number 20 in the land at all , but alternatively an unfitness of the plant to transport calcium to its cellular telephone . In this case , lime the soil wo n’t help .
Note also that peppers choose an acidic ( crushed pH ) soil , and adding calcium carbonate in any form raises the pH. A pH - lowering atomic number 20 additive is to gypsum , or calcium sulphate dihydrate .
to boot , adding too much atomic number 20 can off - balance the soil ’s atomic number 20 / atomic number 12 proportion . A proportion of 68 to 12 is ideal .

In all cases it ’s best to do a soil test before adding supplements that might falsify pH level or the atomic number 20 / Mg ratio .