"Rod Craddock" wrote in message
...
"Tom Atkinson" wrote in message
...
I purchased a Mandevilla last year. It grew in the Conservatory and was
most
spectacular with 100's of blooms. It struggled to survive the winter and
was
pruned in March. Many of the leaves are turning yellow and falling off.
I
have used insecticides, fungicides and given it a dose of Sequestrene
all
to
no avail. I also gave it a foliar feed.
As it is a lime hater I have been watering it with water from a
barrel-could
this be the problem ?
Tom Atkinson



Have you looked at the roots. Just guessing but I would say it's
potbound.
They fill the pot very quickly and in that sense aren't great plants for
growing in containers unless you've got lots of room and big containers.

--
Rod

Mine has been in a small pot for 8 years without repotting! I am not
recommending it, just pointing out it is more likely to be overwatering.
Mandevilla Alice Du Pont also suffers from Botrytis which can infect the
stems causing the whole to die back slowly, they nearly always grow back
from lower down. and of course as new growth starts old leaves are shed,
that is also normal.
My thanks to the OP for reminding me, I have not done the cuttings yet :~)
--
Charlie, gardening in Cornwall.
http://www.roselandhouse.co.uk
Holders of National Plant Collection of Clematis viticella (cvs)