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Bananas
Musa acuminata
‘Dwarf Cavendish’
Yes we grew some bananas, we grew some bananas this year! We
hoped they would taste as good as the ones we bought in the
grocery store, they were much better! Our tree bore 18 fruits
ranging in size from 6" to 3". Our ‘tree’, a Dwarf Cavendish’
was purchased from Edible Landscaping in Afton VA 6 years ago.
It came in a quart pot and was about 18" tall. We have always
been suckers for the ads for those cute little bananas
advertised in the back of magazines and have always had at least
one banana in the house. Whether they fruit or not bananas are
beautiful foliage plants and relatively undemanding.
If you want fruit, they need good light, lots of water and
the kicker is space. The term ‘dwarf’ is relative. Dwarf
Cavendish bananas will bear when they are between 7-9'. and they
will be almost that wide. As our banana grew, we would elevate
it on a table, then a stool so we could walk under it. In the
end it was large enough to be on the floor (on rollers) and
still give us space to walk under it. As the banana grew it was
necessary to move it on into a larger pot each year, if not it
would topple over. Each time it was transplanted it would grow
another foot or two. We have one of our plants children growing
in our gym, the light is not terrific and the air is very dry,
but it looks robust and healthy. Unfortunately at its next
transplanting we will have to elevated it and one day, we may
have to move one of the exercise machines.
Much of the following information has been derived from a
conversation with Glen Stokes of Stokes Tropical Plants
and his excellent book Bananas You Can Grow and W.
O. Lessard’s book, The Complete Book of Bananas.
The bananas we buy in the grocery store are sterile. My first
question to Mr Stokes was, "If they are produced vegetatively,
how come there are so many different types of bananas?"
Bananas are native to tropical Asia and have been cultivated
since the dawn of time. There are some 30-50 wild species, but
only two are the sources of our edible bananas, Musa
acuminata, the yellow desert banana and Musa
balbisiana, the plantain. Bananas develop suckers at the
base of the mother plant, these sports not always identical to
the mother plant. If one of these new plants is of exceptional
quality, the grower will isolate it and begin to cultivate the
new type.
"Botanists can determine just how much of a contribution each
of these species has made to modern cultivars and these
cultivars can be designated by a set of handy abbreviations.
Musa acuminata in "shorthand" is AA for the diploid species.
AAA for triploids and AAAA for tetraploids. Similarly,
plants that are derived completely from Musa balbisiana
are indicated as BB, BBB, or BBBB depending on the number of
chromosomes. Hybrids between these two species can have a
variety of abbreviations including AAB (which are the typical
plantains)."1
A homey way to understand this is, (forgetting the chromosome
counting) if blond blue-eyed aunt Helen (A) has a brown
haired blue-eyed boy, he will have uncle Clarence (B) sex and
brown hair but his mothers blue eyes. BBA?
Bananas are not trees, but large herbaceous plants that grow
from a single corm. The ‘trunk’ is called a pseudo-trunk and is
actually composed of leaf sheaths. When the old leaves yellow
and fade, cut them off and you will see the sheaths. The
actually trunk is the stem of the inflorescence that pushes its
way up through the leaf sheaths.
New corms will form at the base of the pseudo-trunk. If you
were growing these outside you would allow 2 of the pups to
grow. One pup would be half grown and the next just starting.
This is not possible in the home. I don’t think there are pots
large enough to accommodate three growing bananas. I would let
one pup grow until it had 4 sturdy leaves and was about 12" tall
and then cut it out and pot it.
When grown under ideal conditions, out doors in a tropical
environment, bananas will flower and fruit in 15 months. Why did
it take ours 5 years. Mr. Stokes explained: "You only have 3
months of ideal growing conditions a year, multiply that by 5
and you get 15 months".
Growing Bananas in Containers:
Don’t stint on the pot size. Mine was moved on from an 8" to
its eventual size of 15" diameter. It was repotted each year to
the next size pot.
Put your banana outdoors when night time temperatures are at
60 0 in a spot that is protected from strong
winds. If you are growing it in full sun, slowly introduce the
plant to the intense light (otherwise it will scorch). It can
remain outdoors until night time temperatures fall below 570.
During the summer vacation be sure to keep it well watered and
fertilized. It will literally double its size outdoors.
Eventually ours became to big to move outdoors, plus we live on
the coast where even summer winds can blow at 45 kts., this may
further explain why it took 5 years to fruit.
Winter is a holding action for the banana. If one leaf
yellows off, don’t be concerned as long as new velvety leaves
are developing. Once the day light increases, the banana will go
into active growth and must be watered regularly and fertilized.
We used 10-10-10. Mr. Stokes suggests, when it is getting ready
to bloom, use 6-2-12.
How to know when it will fruit: The plant will have
between 9-12 large healthy leaves and the trunk will have a
caliper (circumference) of 9- 12". I noticed the new leaves on
my plant were smaller and sort of formed a large cup. I thought
it might be dying, but low and behold the inflorescence emerged!
It took about 3 months for the fruit to develop and only 24
hours for the whole stalk to ripen at once.
Once the banana has fruited the mother plant will die. If it
has not sent up a pup yet, one will develop quickly at the base
of the old plant. My mother plant had one chunky pup, and once
the mother was removed it trebled it size and now has 9 leaves,
is 6' tall with a caliper of 10". It may flower within the year.
I don’t think any event in our gardening career has been so
exciting. The whole neighborhood, the postman, the contractors
and anyone who entered the house watched this miraculous flower
and fruit develop. It was more than worth the wait and the extra
space.
Sources:
Stokes Tropicals, PO Box 9868, New Iberia, LA 70562-9868,
tel: 800-624-9706 e-mail: www.stokestropicals.com , Edible
Landscaping, 361 Spirit Ridge Ln. Afton VA 22920, 800-524-4156,
e-mail 222.www.ediblelandscaping.com
There are other sources, these are the ones we have used. One
word of caution, there is a charming "Super Dwarf" on the
market. It makes a lovely foliage plant, but if (unlikely) it
bears, it will only have one fruit.
1. Bananas You Can Grow: Waddick, James W.
and Stokes, Glen M. Stokes Publishing Co. 2000 e-mail:
info@stokestropicals.com |