RHS is the UK's leading gardening charity. RHS took a look at five different barriers: eggshells, bark mulch, copper, horticultural grit and wool pellets, and tested these in a trial using lettuces as the host plant growing in both pots and raised beds. You can visit the beautiful RHS gardens throughout the UK for fun days out for all the family.
Encouraging beginners to pick a trowel and get creative with their gardening, the RHS hopes to pass the joy of gardening onto future generations. RHS continues to inspire a passion for gardening among people of all ages, cultures and backgrounds.
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