and how is the best way to cut back a wisteria so that it would
bloom and does it have to be a certain age before it will do so?
Thank you very much!
After non-blooming hydrangea, non-blooming
wisteria is one of the most-often-asked questions I receive. When and
how to prune wisteria is important to getting those beautiful long,
dangling blooms. However, wisteria is not a no-maintenance plant. In
order to maintain and control its size you need to prune wisteria
regularly throughout summer.
Wisteria is a vine that sends out long, whip-like
shoots. The key to pruning wisteria is to trim back those long,
whip-like shoots on a regular basis. In spring when the shoots start
growing prune them back to two nodes (nodes are where the leaves join
the stems). From the nodes flowers appear next year. Throughout the
summer you'll need to repeat the process of pruning back the long
shoots to two nodes each time. Wisteria grows very quickly, so you
will be doing many pruning sessions throughout the summer. This is a
chore you need to do each summer all summer long. Like I said,
wisteria is definitely not a no-maintenance plant.
To answer the second part of your question, yes,
wisteria does need to be a certain age to bloom. On average a young
wisteria will begin blooming when it is seven to 10 years old. That
may seem like a long time to wait, but I have seen old wisteria vines
on old Victorian houses that are over 100 years old.
Another important tip regarding wisterias is that they
need ample water while they are young. Make sure they receive
adequate moisture, especially during dry spells. Fertilizing
regularly throughout the season also helps. Use Electra
Plant Food first, then three weeks later use Electra
Bloom Food and alternate between the two all season long.