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Cold Weather
Growing Seasons: Two of the fastest
growing heirloom tomatoes come from a famously
cold place, the Siberia and Siberian.
These small tomatoes mature in 48 to 55 and 55 to
60 days respectively. In these type of locales,
the cold weather cuts the growing season down to
a mere 90 to 120 frost free days in some places.
That's not much time to grow a tomato. Therefore,
lots of time and effort were put in to developing
cultivars that would mature faster, set fruit at
low temperatures and under harsh growing
conditions. Many other famous early season
tomato cultivars can trace their roots back to
cold weather climates. They include the Glacier
Heirloom (Sweden), Stupice
(Czechoslovakia), Manitoba (Canada) as
well as the Oregon Spring and New
Yorker (United States). And another famous
cold weather early season tomato is the Sub
Arctic cultivars with a history that goes
back to a research station in Alberta, Canada,
and a reputation for having been growin in the
Southern Yukon - a cold place. In fact, it was
developed during WW2 in the 1940s in order to
supply US Air Forcer personnel station in
Greenland with fresh vegetables.
Tomatoes for cold weather short growing season
climates are quite popular in Northern states and
countries with a reputation for cold weather. In
New England, the growing season can be as short
as 120 to 180 days with an average of 150 and
frosts coming as late as June in some high
altitude areas. Over to the West, in the
mountainous area of Northern and Central Idaho,
the growing season can be as short as 90 to 150
days in the low lying areas. In the Midwestern
state of South Dakota, the growing season is also
a short 100 to 150 days, with killing frosts
coming as late as May.
However, in Oklahoma, where I live, we enjoy a
fairly long season of 168 to 238 days. I am in
the area where it is 238 days. :-) - Despite this
positive factor, the hot weather here causes a
different set of problems for tomato growers.
Hot Weather Climates: The
ideal growing temperatures to produce tomato
blooms and fruits is 75 to 85 degrees, (24 to
29.5 degrees Celsious). Temperatures 85 to 95
degrees (29.5 to 35) are - okay, but are starting
to get into the too high region. However, once
the temperatures get above 95 - and stay there
for a few days - things will start to go down
hill for your tomato plant pretty fast. In that
higher temperature range, the blooms will fall
off before they have a chance to produce a
tomato. Any tomato that does happen to make it
out of the bloom despite the high temperatures
has a good chance of cracking under the Sun's
heat.
| There are some actions you can take
to protect your tomato at this point.
Hopefully, you planted it as deep as you
possibly could. Second, you can water it
at the base more often. (Never water the
leaves, water at the base only). Third,
you can lay down a mulch around the base
to lock in the moisture and keep the
roots cooler. You want to keep the
temperature for those roots cooler than
the outside temperatures. If you are
growing your early season tomatoes in a
bucket or container, this means watering
more often than you would if they were in
the ground or a raised bed garden. This
year, I opted to lay down a white quartz
river rock mulch which has worked
extremely well in retaining moisture and
keeping the soil temperatures cool. Read about it in my 2009
journal. [From seed to ripe
tomatoes in 105 days.] If you live in
the Southern hotter states, or in
Arizona, New Mexico or Nevada, careful
selection of which cultivar to grow can
be invaluable in getting a respectable
tomato crop. For instance, you can choose
one of the heirloom tomato varities for
hot climates such as: Arkansas
Traveler, Marion, and
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Mule Team, or one of the famous
Florida Hybrids such as the Spitfire, Sun
Leaper, Sunmaster, Solar Set,
Solar Fire and Heatwave.
Although seed sellers claim these Florida Hybrids
taste great, some reports on the internet by
growers do not confirm this claim. Personally, I
don't know. I'll try growing some hot weather
tomatoes next year and report back. (The
heirlooms have a good reputation for flavor
though, especially the Arkansas Traveler which is
popular).
For 2009, to get around the heat problem, I
opted to grow and compare two early season
varities: The quite famous Early
Girl Tomato
(52 to 62 days) and the fairly new Jetsetter
Tomato (64 days). Our last
frost free day averages April 1st, much - much
earlier than the Northern states, so I am able to
transplant my tomatoes around April 15. This
year, from April 10 to 20th, I acclimated my
tomato starters outside during the day, and
brought them in at night. By April 20th, they
were planted and by June 1st, they had begun
producing fruit. See my 2009
growing journal for more information.
By June 15th, the Early Girls were averaging 5 to
9 fruits per plant and the Jetsetter two fruits
per plant.
The temperatures will start to increase
dramatically after the 4th of July and stay high
until August. Therefore, I will have to fight
hard to keep my tomatoes cool. (I was wrong about
all this, read my journal).
One interesting point that you will read in
the 2009 journal is that
my early season tomatoes, although planted 6.5
weeks AFTER my later season Brandywine's and
Beefsteaks, quickly shot past those older
tomatoes in both height and size - despite the
age difference.
Have it both ways: You might
be starting to think, "Wouldn't it be
nice if they had a hot climate AND early season
tomato I could grow? That way, I could kill two
tomatoes with one stone." Well, they do
have a couple of tomatoes like that. The Bloody
Butcher is a fair producer of
2-inch 3-4 ounce fruits on a compact
indeterminate vine in only 55 days. It is fairly
resistant to hot weather and produces good
tasting tomatoes.
Another early season tomato that has high heat
resistance is the Gregori's Altai,
which is also heavy producer of pinkish-red
beefsteak style tomatoes up to 8 ounces.
The Porter is
a 4 ounce, deep red tomato that matures in 65 to
75 days (variance of opinion on days), is
resistant to cracking and sunburn, and does well
in hot temperatures. The Super Sioux
matures in 70 days, and is technically not an
Early Season tomato, but it does mature faster
than many of the other heat tolerant varities.
It's an old time favorite heirloom that produces
4 ounce fruits on indeterminate vines and is
worth trying if you are aiming for both benefits.
How can I speed it up more? So
you have chosen your cultivars of early season
tomatoes and you want to know "how can I
grow my tomatoes even faster?"
Well, there are a few key points you have to
remember, and follow, if you want faster growing
tomatoes. These are simple rules that must be
followed since at the very least, you don't want
to do anything that will slow down your tomato
growth.
First off, if you have started your seedlings
indoors between Valentine's Day and St. Patrick's
day (which is when you should have started them),
then you have to keep that seedling either in
front of a Sunny window, or under a grow light.
Here in Oklahoma, the Sunlight is adequate during
the Spring months for my tomato seedlings. I
recently ran an experiment with one
seedling directly in the window and Sunlight, and
another about 2 feet away from the window, and
out of the direct Sunlight. The difference was
amazing. At about 4 weeks, the direct light
seedling was 5 to 6 inches tall. The one away
from the window was only 2 to 3 inches tall.
That's quite a difference and shows you how
important Sunlight is on a young tomato.
The three other important factors you want to
have present is highly rich composted soil. Never
grow your tomatoes in plain top soil. That's just
not good enough and you will be very disappointed
with the results. Just as important, you
definitely need to mix in a large cup of garden
lime, or crushed eggshells, in your container, or
ground garden hole. Either one provides much
needed calcium which will prevent blossom rot - a
problem in tomatoes that tend to grow too fast.
Second, you need to pray for lots of Spring
rain. In 2009, for a 2.5 week period during late
April, it rained nearly every day in Tulsa, OK, -
and I'm glad it did. Our young tomatoes shot up
like they were on steroids. Rainwater is always
better than gardenhose water. Old time gardners
will actually put empty buckets and containers
outside during Spring rainy days to catch extra
rainwater to use for their plants. If you don't
happen to get enough or a lot of rain after your
transplanting, you can try faking it by making a
compost tea.
Finally, fertilizing with organic fertilizer
or tomato food won't hurt either. I usually put
some in the hole when I first transplant my
tomatoes, and follow up once a week with
"tomato food," a fertilizer sold
specifically for tomatoes under the common noun
of "tomato food."
Timing, Sun, Rain,
Composted Soil with Calcium, Rock Mulch,
Watering, Guarding
There are a lot of products and gimmicks on
the internet which promise to grow tomatoes
faster, but I am skeptical and dismissive of
them. First of all, my philosophy is if I can't
grow it the way the old timers did, than I need
to be doing something else. Second, if this
recession gets worse and turns into grow your own
food for survival situation, do I really want to
be dependant on a bunch of gimmicky products when
the chips are down? Now, I will admit that I am
considering buying some Bloom Spray this year, to
keep my blooms going when the temp's are too hot,
but this is mostly an attempt to salvage tomato
production when the temp's are too high - not
something one uses to grow tomatoes faster.
Early Season Tomato Yield Averages: Some
often asked questions about tomato growing is, how
many pounds of tomatoes will I get from each
plant? - First off, let's not count our
chickens before they hatch, or our tomatoes
before they come out of the bloom. This will
largely depend on the growing conditions, soil,
watering and temperatures. However, in a March
2006 report from the Alaska Agricultural and
Forestry Experiment station, production yields
for some early season tomato varities were taken
and averaged together for a 3 year period that
included 2001, 2002 and 2004. Their results on
the average yields per cultivar/plant included:
| Cultivar |
Avg. Yield
Mean Wt/Plant |
Avg. Fruit
Size |
| Glacier |
4.2 lbs |
1.9 oz |
| Prairie Fire |
4.3 lbs |
4.3 oz |
| Stupice |
3.2 lbs |
2.1 oz |
| Sub-Arctic 25 |
4.0 lbs |
1.4 oz |
Source:
Alaska Agricultural and Forestry
These 4 varities are discussed in
greater detail here.

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