causes my tomato leaves to go brown?
have a problem with my tomatoes that I am not familiar with. I thought
it was blossom end rot, but now I am not sure. The tomatoes are
developing black spots (more like holes) when ripening, but not
necessarily at the ends. Do you have any ideas on what this is,
and what I can do to save the rest of the ripening fruit?
of these queries relate to Blight. Late Blight is prevalent in cool,
humid conditions. There is no cure but it can be prevented from
spreading by picking off infected leaves and fruit as soon as signs
appear. Spray plants with Bravo, Greenguard or Tomato Spray. As
a preventative, regular spraying at fortnightly intervals with Champion
Copper or Copper Oxychloride will reduce the incidence of Blight.
If there is no improvement,
removing the infected plants would be the best solution. Be sure
to remove and destroy all infected fruit and foliage by putting
them in the rubbish bin rather than the compost bin to stop the
Late Blight also affects
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
The views expressed here are not necessarily those of the RNZIH