Fertilising Plants in Acidic Soil

Why fertilise?
There are plenty of plants with a preference for an acidic soil. Plants that prefer acidic conditions are among others: pines, spruce trees, thujas, rhododendrons, azaleas and for example Blueberry bushes. Among the deciduous trees maples like an acidic soil and hydrangeas and magnolias also prefer it. Perennials that thrive in woodlands and forests also frequently prefer acidic conditions.

Initial Fertilising
Planting should be done in Kekkilä’s Spruce and Rhododendron Soil which has been fertilised.

Further Fertilising
Kekkilä’s liquid Spruce and Rhododendron Nutrients (a 1,5 l /0,40 gal bottle) should be given when watering 0,5 dl /. 1,69 oz is added in 10 l / 2,64 gal of water every time the plants are watered or every other time 1 dl / 3,38 oz of nutrients in 10 l / 2,64 gal of water.
Kekkiläs Spruce and Rhododendron Fertiliser (0,8 kg / 1,76 lbs) is soluble in water. It should be given after it has thawed in the spring and until the beginning of July 2-3 times a month. From the end of July Kekkilä’s Autumn Fertiliser is more suitable and improves the plants abilities to handle the winter.

Where to Fertilise
The plants are fertilised by watering with fertilised water. Rhododendrons have a fairly compact root clump, large pine trees have a pole root, smaller shrublike pines have a more divided root system and spruces have a fairly wide spread and shallow root system. Thujas have a vigorous roots and they usually grow both sidewise and more deeply into the ground. Watering and thereby fertilising should be done in such a manner that it reaches the root system.