University of Vermont Extension
Department of Plant and Soil Science
CLEANING ANNUALS AND OTHER
JULY GARDENING TIPS
Leonard Perry, UVM Extension
summer annual flowers, protecting plants from birds, and watching for
some of the gardening activities for this month.
planting vegetables such as radishes, carrots, and lettuce so that
a continual supply of these vegetables into the fall. Seeds will
quickly in the warm soils, but so will the weeds. Be diligent about
watering, and thinning your new seedlings.
summer annuals such as petunias used to benefit from a mid-season
the past, most newer cultivars (cultivated varieties) either keep a
habit or spread nicely as desired. Some are self-cleaning,
meaning their flowers
fall off without needing you to prune them off or
“deadhead.” If flowers on these or other annuals such
marigolds and zinnias remain, deadheading them after bloom will keep
attractive, more bushy, and help them to bloom better.
you're going on vacation and are concerned about your container plants,
are some tips for keeping them healthy. Water containers thoroughly
leaving and move them into a shady location where they won't dry out as
Place smaller containers in basins with a few inches of water that will
be absorbed by the plants while you're gone.
If gone for a longer period, line up a plant sitter but make sure you
over with them all the details you want done.
Grouping potted plants makes it easier for your sitter to not miss any.
cherry trees and blueberry bushes from hungry birds. As these fruits
birds will be attracted to them. Place bird netting over the trees and
propping it up with poles or stakes so the netting doesn't lay on the
plants. Make sure it is fastened to the ground,
otherwise birds may get underneath and not be able to get out.
Otherwise, check plants daily for any birds
that have slipped under the net.
tomato plants for large, green-striped horned caterpillars. A few can
lots of damage, so hand pick and destroy them when found. Spray the
pesticide B.t. (Bacillus thuringiensis) to control large infestations.
your squash vines from the squash vine borer.
These clear-winged moths lay their eggs on the stems and the hatching
larvae bore into the vines, causing the plant to wilt and possibly
die. Apply the organic pesticide B.t. every 3 or 4
days during July and early August to kill hatching larvae before they
stems. A thin layer of wood ashes or
moth flakes scattered around plants may discourage egg laying.
these don’t work on the squash vine borer, slit the vine stem
where it is
wilting and follow back until you find the feeding grub. Remove
and destroy it, then bury the end of
the vine so it hopefully will root and resume growth.
is a great time to visit perennial nurseries to see what is in bloom,
to your collection. As virtually all the
plants are in pots, it is fine to plant them now, just add some compost
planting, mulch, and keep them well-watered.
There are many local specialists you can find online under Vermont
Perennial Display gardens
(Charlie Nardozzi is a nationally known horticulturist,
author, gardening consultant, and garden coach