Gravel beds aren't always well-drained

5th February 2021

Gravel beds aren't always well-drained

Although the raised bed in which the iris are planted has been filled with a mixture of soil and grit and top dressed with gravel, the soil is still very moisture-retentive, and its location (at the foot of a slope) means that it can actually stay quite wet , rather than giving a really free-draining environment for alpines and bulbs.  The fact that Ajuga reptans is spreading across  it is good evidence that it doesn't dry out!

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