Taking root cuttings is a useful method of propagation for plants that won't root easily from cuttings or division. This simple technique involves removing small sections of root from a plant which can be used to propagate a large number of different varieties.
Root cuttings need reasonable compost, a moderate but steady temperature, space and a little patience. But, unlike stem or leaf cuttings, root cuttings develop underground so you can't see what's going on.
As with many techniques, a greenhouse is an asset, but not essential. Bottom heat is not necessary, so there's no need for a propagator. Light is not important until shoots have begun to appear above the soil. So, the best spot for starting root cuttings is in a gently heated greenhouse, kept frost-free in winter.
Carol Klein demonstrates how to take root cuttings from a primula plant to ensure an identical offspring.
Trees and shrubs suitable for root propagation:
Herbaceous plants suitable for root propagation:
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