There are an estimated 20 million gardeners in Britain and the market is worth £5 billion annually.
The drive to bring the growing garden army to the region is being mounted by North Wales Tourism whose Gardens North Wales brochure have been backed by Medwyn Williams, star of BBC television's Great British Village Show.
The campaign includes a host of special garden breaks taking in some of the region's finest gardens and specialist nurseries.
Among the stars of the campaign are the spectacular Italianate gardens at Plas Newydd, on Anglesey, home to the Marquess of Angelsey and the award-winning Bodnant Garden in the Conwy Valley.
In the Vale of Clwyd you will find the remarkable Dibleys Nurseries, near the village of Llanelidan.
They are the UK's leading growers of Streptocarpus and picked up yet another gold medal at this year's Chelsea Flower Show.
The Borderlands area of North East Wales is also well represented. And if you fancy a trip to horticultural heaven, you could do worse than venturing to see the gardens Erddig Hall, in Wrexham, and Chirk Castle.
North Wales Tourism managing director Esther Roberts said: "Gardening now is a very wide market. It's a trendy thing to do - designing your own garden or getting somebody in to design it for you. Going to a garden centre is like visiting an attraction or going shopping. It's become a very popular and 'in' thing to do.
Medwyn said: "There are so many tourists coming to North Wales, it's a great catchment area and we need to educate them about these jewels that we've got here.
"North Wales has been under-rated and under-valued in horticultural terms for far too long. We have got some fantastic gardens here - some well know and others not so well known."
For more information go to: www.gardensnorthwales.co.uk or call 08705 168767.