Zone Cheating
(Other tropical links
at bottom of page)
Growing Plants You Ought to Not Grow Because:
-
You like to live dangerously
-
You like heartbreak
-
You don't mind spending freezing wet nights covering plants,
digging them up, or rigging up temporary greenhouse-like structures
-
You want something in your garden that is not in every other
garden in the neighborhood
-
You want the feeling of a tropical island in your backyard
-
It's the cool
thing to do
OK, now that we have established that you are either dumb,
crazy, a risk taker, in serious self denial about where you live, or some combination of the
above lets talk
about increasing the odds of your success for a while, and I do mean for a
while. These techniques
will work for most Zone 9b and Zone 10 plants for a few years until one of three
things happen.
-
You forget, get
caught out of town, get lazy, or trust someone else to do it. (I have been
victim to each of these at some point)
-
The plants gets too big to cover (I have only
been this fortunate once)
-
Mother Nature decides it time to clean up and
send one of those once a decade Artic blast comes through that cleans out all
of these alien plants. Sooner or later this will happen and there is
little protecting against it. You can try, but 20 and 30 year old Palms
in New Orleans have succumbed to these freezes. Usually happens right
around Christmas/New Years Day. Upper 70s one day, the 3 days in the low
teens or single digits. Plants never knew what hit them. All
that's left is mush and yep, your broken heart. (Last one to come
through was in the late 80s, so we are due any year now) Now I am not trying
to discourage you, just setting in a little reality. This is where the
true diehards are separated from the trend followers. Most folks can't
take the pain and vow to only plant hardy plants from that point forward, but
take heart, my last tip might give you some piece of mind.
OK, if I still haven't discouraged you, here is how you up the odds and make
exotic tropical plants survive a mild winter freeze. These may be used
individually or in combination depending on the plant and common sense.
The chemical techniques might be good for an additional 4 or 5 degrees if done
just right. Most winters that is more than enough. Adding the
structure approach can be good for 10 degrees or more depending on your
attention to detail.
Cold Hardiness
Links:
http://tct.netfirms.com/tropics/coldhard.html.
Freeze Protection
Links:
http://www.aces.edu/department/peaches/freeze.html
http://www.burger.com/freeze.htm
Other tips and hints:
1. Harden the plant for the winter and
build some type of freeze-protection.
Begin fertilizing with a high potassium fertilizer from mid-summer on
Use a root stimulator product regularly such as SuperThrive or Schultz Root
Stimulator
Use a potassium foliar spray 24- 48 hours ahead of the freeze such as
Dyna-Gro Pro-Tek
Use an anti-transpirant spray such as WiltPruf
2. Make the most of the microclimate for
the night of the freeze.
Water all plants the night before the freeze
Cover the entire plants with mulch or leaves
Soil bank the main trunk as high as practical
Depending on the plant turn on your sprinklers as a last resort
Build a mini greenhouse or cover. Do not use plastic alone unless you
want a dead plant.*
If the freeze is bad enough and the plant small enough, dig it up and pot it
for the winter.
3. Take care of post-freeze trauma.
Prune away decaying plant matter immediately
Prune away non-decaying plant matter you suspect is damaged at the proper
time for the plant
4. Always have a clone in the ready
room*"
**The biggest advantage of all to Zone
Cheaters is the fact that most tropical plants are easily rooted from
cuttings or seeds. As you are pruning, shaping and keeping plants under control
over the spring and summer don't throw those cuttings away. Use the
cuttings to root new plants. Worse case, the plant gets frozen, you have
a free replacement plants waiting in the wings. Best case with a mild
winter allows you to either plant the additional plants in your garden, sell
them, swap them for other plants with fellow gardeners, or introduce someone
new to tropical plants in the garden. It's a win-win situation.
*Many a good plant was not killed by a
freeze, but by either covering a plant with plastic alone which will kill all
foliage in contact with the plastic or by leaving the plastic sealed down the
day after the freeze and baking the plant to death. Temperatures in the
50s with full sun and clear plastic cover can easily kill a small tree, like a
Citrus tree. I have first hand experience.
Tropical Related
http://www.gingergarden.com/ - Got a soft spot for Gingers, check here.
http://www.lsuagcenter.com/en/lawn_garden/master_gardener/parish_lmg_programs/Greater_New_Orleans/Hot_Topics/Cold+Protection+Tips.htm
Plant temperature tolerance information from Louisiana State University.
http://www.raingardens.com/sitemap.htm - Great site out of Houston.
Pictures, information, links, lots of info here. Be sure to check out
Robert Riffle's Image Gallery
too. Over 100 images of tropical looking plants growing in Houston, Texas.
http://www.rain-tree.com/plants.htm - Raintree's website is dedicated to
providing information and education on the important plants of the Amazon
Rainforest, therefore this section is the most extensive.
http://tct.netfirms.com/tropics/trophp.html - Set up a tropical paradise
right in your own snow covered backyard. Palms, cycads, bananas, and other
tropicals are yours to enjoy every day even if you live in Oregon, Canada, or
northern Europe. Knowing the what, where, when, and how make it all possible.
Let the Cool
http://www.urbanjungle.uk.com
- Exotic plants in the UK. Welcome to the Urban Jungle website.
http://www.personal.u-net.com/~treetops/home.html
- Another UK site with good cold hardiness info on palms.