10/29/2026
Our four Grevilleas made it through their first Arizona summer in our Way Out Back Garden! 🥰🌿
They braved the intense desert sun and summer heat, and now, after a few nice rain events and cooler temperatures, they are rewarding us with lots of beautiful new growth!
We currently have four varieties growing:
🌿 Long John (Grevillea ‘Long John’)
🌿 Moonlight (Grevillea ‘Moonlight’)
🌿 Peaches and Cream (Grevillea ‘Peaches and Cream’)
🌿 Sylvia (Grevillea ‘Sylvia’)
I’ve also been doing a little cleanup and maintenance, removing branches and leaves damaged by the summer heat. I gave them some light tip pruning to encourage more side shoots and hopefully help them develop fuller, bushier growth as they mature.
This morning, I am giving them a little nutritional boost with Gondwanaland Protea Fertilizer (12-1-8), which I purchased specifically for our Australian native plants.
One interesting thing about Grevilleas is that many are extremely sensitive to phosphorus. Unlike most plants in our garden, too much phosphorus can actually damage or even kill them! They have evolved to thrive in the nutrient-poor soils of Australia, so regular fertilizers aren’t always suitable.
This fertilizer has a very low phosphorus content and is formulated for plants like Grevilleas, Proteas, and other members of the Proteaceae family.
Growing Australian natives in the Arizona low desert has been another fun experiment for us. So far, I am pretty impressed with how well these four have handled our brutal summer! Now I can’t wait to see them mature and hopefully put on a beautiful show of flowers for our hummingbirds and other pollinators! 🥰