Lime soil to re­duce its acid­ity

Gardeners' World - - Fruit & Veg -

Your soil has a pH value that af­fects the plants’ abil­ity to take up nu­tri­ents. A pH of 6.5-7 is ideal and you can buy a test kit from the gar­den cen­tre. If the value is high, above 7, it means your soil is al­ka­line and has plenty of lime. You can’t do much to change a high pH, but you can al­ter a low pH. In the veg­etable gar­den where acidic or­ganic mat­ter is of­ten added, the pH can drop well be­low 6.5. This can be ad­dressed by lim­ing your soil in the win­ter ev­ery few years. To do this, spread gar­den lime or cal­ci­fied sea­weed on the soil. Fork or rake it into the sur­face then leave it to work in slowly. Lime also helps to break down large lumps in clay soils. Avoid ma­nur­ing at the same time, par­tic­u­larly in the spring, as the ni­tro­gen in ma­nure is lost faster when it’s in con­tact with lime.

Most veg like a neu­tral pH of 7, adding lime will in­crease pH value

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