sick looking hibiscus

 Hi
I have a few hibiscus that aren't looking that great, they have some
yellowing on the leaves & a few black spots & generally just look yuk, what
can I do for them?
cheers
Sandra

 

Prune them to encourage new bushy growth. Personally I like to keep the bush
well trimmed. This encourages new growth and better flowers. I prefer that
to unsitely leggy growth that encourages disease like sooty mould and bugs
like aphids.

Was a poor year for native and decidous hibiscus this year as the weather
didn't suit. There was deformed leaves and flowers and not seeds produced.
Hopefully it will be better this year.

Richard

 

Are they the tropical sorts, or native ones?  I know the tropical ones get
badly affected by frost.  Mine look miserable after each winter.  But early
spring, after the frosts have finished, you prune them back, and they come
up great again.

Jen

 They are the tropical ones, some are looking great & had lovely flowers
where some the flowers just drop off before opening.
I would not say we have had a frost problem in Perth this winter, & I think
it is time for me to prune, would that be correct?
cheers
Sandra

 

Yep.  Spring is supposed to be best.  They say to remove about a third of
the plant.  Don't worry it grows back great.  I love the flowers.

Jen