Holly Farrell trained at RHS Garden Wisley, where she gained the Wisley Diploma and RHS Certificates in Horticulture. Since then she has worked in gardens large and small, and written numerous books. RHS Gardening for Mindfulness was a finalist at the 2017 Garden Media Guild Awards, as was The Jam Maker's Garden. Holly is also the author of Growing Herbs (Kew Gardener's Guides), RHS Happy Houseplants, RHS Miniature Garden Grower, RHS Plants from Pips (winner, Prix PJ Redouté 2016), RHS Do Bees Need Weeds? (as a co-author) and Healing with Plants: The Chelsea Physic Garden Herbal.
Holly also regularly contributes to magazines such as The Garden, In the Moment, Breathe, The English Garden, Kitchen Garden and Teen Breathe. Her Instagram account, @_holly_farrell_, follows her in her own Shropshire garden and out in the countryside.