Information Session: Common Pests By Rob Murray.
Scale: there are two forms, hard and soft.
Hard scale is black, is called FlySpeck scale, is spread
by touch and wind and is hard to eliminate.
Soft scale is common on the underside of leaves.
Control of scale options:
remove by hand, or chemical insecticides. If you are lucky,
lady beetles and parasitic wasps eat them.
Mealy bugs are oval soft-bodied insects, 1-3mm size.
Grasshoppers chew large holes in the leaves of our broms,
especially vrieseas and tillandsias.
imidacloprid is preferred, was sold as Confidor in Bunnings, then as Conguard (Searles) until Bunnings went “green” a couple of years ago and took many chemical insecticides off their shelves.
I believe it was in response to a campaign on social media, somewhat misinformed.
We were told the Mitre Ten stores now stock Conguard.
Spectrum 200SC contains imidacloprid but cost $65 for 1L. at Fernland at Yandina.
RICHGRO Bug Killa is granular imidacloprid at Bunnings for $12.90 which can be
dissolved in water for spraying. But why bother when the solution is available?
The Australian bush Turkey can play havoc with our potted broms.
Slugs and snails (Gastropoda) cause irregular holes in leaves.
Control needs to reduce moisture, keep areas clean, use baits and pellets.
Rodents and possums: control with baits and traps.
Overview of Treatments:
Rob discussed the pros and cons of pesticides:
Many thanks Rob for helping us to control pests in our bromeliads.