Advice Pages

Soil Terminology
The terms used in our website plant descriptions to describe the types of soil which do, or do not, suit the plant should be understood as follows:

Fertile Soil rich in nutrients necessary for basic plant nutrition, including nitrogen, phosphorus and potassium
Acid Soil with a pH value of 6.0 or lower where rhododendrons thrive.
Lime-free Soil with a pH value of 6.0 to 7.0 where rhododendrons may suffer from yellowing of their leaves unless supplements of sulphur or chelated iron (e.g. Sequestrene) are applied.
Chalky Soil with a pH of over 7.0 in which rhododendrons will not thrive.
Retentive Soil with plenty of organic matter which holds moisture without becoming waterlogged.
Well drained Soil where, even after prolonged heavy rain, surface water drains away in a short time.
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