The event is for new suppliers to the 141-centre group only and is on 12 November at Holiday Inn Brentford Lock, Commerce Rd, Brentford, London, close to Wyevale's Syon Park HQ.
Wyevale will pick potential suppliers for 20-minute meetings, with two company representatives allowed to attend.
The garden centre group is looking for suppliers of any size in gardening, home and horticulture categories.
A new horticulture head is believed to be about to be announced, while a new head of home is further off.
Members should contact Peter Stone at email@example.com to apply to attend by 17 October.