This Forum will close on Wednesday 27 March, 2024. Please refer to the announcement on the Discussions page for further detail.
Sand for rock gardens
Advice on creating rock gardens basically suggests three layers: a 6” base layer of rocks and rubble, a 3” layer of sand and a top layer of a suitable soil mix to go between the larger top rocks.
If the purpose of the sand layer is just to help promote good drainage is it really necessary to use horticultural sand rather than sharp sand? In time won’t any salts in the cheaper sand just leach away?
0
Posts
Salt is the most common.
The salt will leach into the soil and may well kill any plant roots above or below it.
I imagine other salts could be present too, but tbh it's not something I have much experience of.
Horticultural sand will have been washed and is a safer choice.
I would think that horticultural grit would be a good alternative, but probably more expensive
As you're probably already aware, builder's sand is completely unsuitable.
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.