The garden at 3 Dampier Court features cottage plants, and hundreds of different specimens of cacti and bromeliads nurtured by the couple, who are members of the Cacti Society and Kelmscott Garden Club.
Tea and coffee will be available for a gold-coin donations.
The $5 entry fee will be donated entirely to the RSPCA.
PerthNow Digital Edition.
Your local paper, whenever you want it.Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOWPotted plants will also be on sale, with 20 per cent of the proceeds from these sales also donated.