secretions on Grevillea
is a white, waxy secretion coming from my grevillea. Is this a sign
that my plant is about to die?
is one of the symptoms of psyllids an insect that looks a
bit like an aphid which grevilleas are prone to. Other symptoms
include damaged flowers, distorted yellow leaves, and buds that
shrivel and fall to the ground.
Psyllids attack and lay
their eggs on the young leaves, but they are not actually harmful
to the plant itself. The white wax you describe is a crystalline
sugar which the psyllids excrete.
Prune off minor damage.
Spot spray with a soapy spray, pyrethrum or a simple oil spray if
by Dr Dan Blanchon from Unitec's Diploma in Sustainable Horticulture and Bachelor
of Resource Management.
with permission from NZOOM Home and Garden content,
from the previous
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