When fertilising, avoid fertilisers that are high in phosphorous. Too much phosphorous can cause poisoning in a Grevillea and cause it to die.

Are grevilleas short lived?

The genera that have probably contributed most to labelling native plants as being short-lived are Acacia (Wattles) and Grevillea. Acacias have around 1000 species and Grevilleas 260. Most of these are short-lived species but they also contain some long-lived species.

Do shrubs have a life span?

The life span of most small trees and shrubs is about 7 to 10 years. With proper maintenance, many of them can live a bit longer than this. Still, it’s good to keep this rule of thumb in mind: For about the first five years small trees and shrubs will grow to fill in their assigned areas.