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ni wnaiff gymryd lle mawn , sy'n gompost asidig , glyn -- mae'n dda at dyfu llus a rhosod ond nid yw cystal os ydych am dyfu planhigion nad ydynt yn hoffi pridd asidig
it will not replace peat , which is an acidic compost , glyn -- it is good for growing blueberries and roses but not so good if you want to grow plants that do not like acid soils