Potassium Nitrate is a versatile garden product used for flowering and fruiting plants, targeted nutrient feeding, and helping old tree stumps break down. Learn how it works, when to use it, and how it compares with Sulphate of Potash.
With over a dozen officially recognised flower forms, dahlias offer more variety than almost any other garden plant — from golf-ball-sized pompons to dinner plate blooms exceeding 30cm across. This guide breaks down every dahlia classification, from decorative and cactus types to pollinator-friendly singles and collarettes, helping you choose the right varieties for your garden style, whether that's cut flowers, dramatic displays, or a bee-friendly border.
