In article ,
lid says...
Some small azaleas we have, have not done well in their garden pots,
presumably because we didn't use ericaceous compost.

To save them we now want to put them directly in the garden soil. Is there
anything we can add to our garden soil to make it more acidic where we are
planting them to make them happy? Thanks for advice.



There is a product called sequestral (spelling?) which can help but
basically it is only of limited benifit and unless your soil is already
neutral to acid they will never thrive although you may be able to keep
them alive.
Soils close to acid can perhaps be made slightly acidic by the
application of a lot of manure or shredded conifer but none of this will
work for alkaline soils with a high PH (and you can make things worse by
using tap water in many parts of the UK)
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea