Phlox species are available in
heights ranging from groundcovers such as moss phlox
and woodland phlox up to types of garden phlox which
may reach heights of 4 feet or more.
In general, all of the phlox prefer full sun but
will tolerate some shade. They prefer a light,
well-drained soil with plenty of organic matter.
For those types that are susceptable to powdery
mildew, a site with good air drainage helps. Avoid
low lying sites where humid air will settle on hot
days in late summer. Choose a place where the breeze
can move through easily.
No special requirements. Plant
the same as any other
Deadhead regularly to keep them blooming except
the moss phlox.
The key problem with Phlox
paniculata and a few other species is their
susceptibility to powdery mildew. You can treat it
fungicides but a more acceptable approach is to
seek out mildew resistant species and cultivars. It
is no fun to have to spray your flower beds so do
whatever you can to find a non-chemical control
Also, see the comments of
selecting a site for your phlox above.
Be sure to plant only phlox which
are rated as hardy for your climate zone to avoid
any need for winter protection.
Division is the most common form of propagation
for phlox. However, species such as Phlox
paniculata can be propagated by
have provided some general information and
observations on this topic aimed at the home
gardener. Before you take
any serious action in your landscape, check
with your state's land grant university's
Service for the most current,
appropriate, localized recommendations.