ORCHIDS
Cattleya sincorana |
Fifty years ago
orchids were rarely seen outside stately homes with large gardens and
greenhouses. I don’t recall seeing them during my five year gardening apprenticeship
training, though we were given notes on their culture. Orchids were expensive
to purchase so they remained fairly rare, but life moves on and growers and
breeders saw a huge opportunity, so before long new varieties appeared on the
market and using meristem culture they could be propagated in very large
numbers quite cheaply. Today they now appear everywhere for sale from garden
centres to supermarkets at very affordable prices. The Phalaenopsis seems to be
the most popular, but then the flowers come in a range of colours, with stems
full of blooms can last for months, and they are very easy to grow. However you
must avoid keeping them in sunlight (they prefer dappled shade or full shade)
and never leave them sitting in water. A sunny bathroom is perfect where the
aerial roots can get plenty of atmospheric moisture, though in our Scottish
climate they will be happy on a sunny windowsill during the winter months. In
their natural environment they grow by clinging to tree trunks in tropical
forests where there is plenty of warmth and rainfall with perfect drainage, and
nutrients washed down the trunk from bird droppings and rotting leaves absorbed
by the aerial roots hang down the side of the plant. The woodland canopy, mostly
evergreen, affords dappled light and protection from strong sunlight. Orchids can be found all
over the world growing wild in damp moist and peaty soils. I saw drifts of
thousands growing in Glen Nevis and they even reached weed status growing in
industrial developments in Livingston New Town.
Cattleya Saturn |
White phalaenopsis acrylic painting |
Growing orchids in the home
Wild orchid |
The Phalaenopsis type
are usually quite reliable and very rewarding when it repeats the flowering
every year, so makes the best one to start with. They will come in pots with
ample holes for drainage and planted in special orchid compost. This is often a
mixture of bark chips, coarse graded peat, charcoal to keep the mixture sweet,
nutrients and trace elements. This should be sufficient to keep the plant happy
for two to four years before repotting is necessary depending on type. It is
best to repot in spring as growth commences. I purchased one in full flower
last August at the City Road Allotments open day and it continued to flower
well beyond Christmas. Once flowering is over allow the plant some dormancy by
keeping it in a cooler spot, and water less often, but do not let it dry out
and do not feed at this stage or repot. Orchids are not heavy feeders so just
give them an orchid feed once every two to four weeks while they are growing.
Paphiopedilum orchid |
Phalaenopsis can flower most of the year with six or up to twenty or more flowers on
one spike. Keep the stem staked otherwise it hangs over and could pull over the
whole plant.
Cymbidiums are very popular and another good one to start with as they are very
adaptable. They flower in autumn to spring producing many spikes with up to
twenty flowers each lasting up to ten weeks. The plants can grow quite large
and are happy in a cool room. They require more frequent repotting because of
their strong growth.
Paphiopedilum orchids are terrestrial, not epiphytic so there are no aerial roots or
pseudobulbs. They grow from rhizomes just below ground level and produce medium
sized flower stems with just one or a few flowers. They like to be kept lightly
shaded. Propagate by division in spring and repot every second year in the
smallest pot available.
Salads for autumn and winter |
Cattleyas are epiphytes that are very
flamboyant with large colourful flowers which are often highly perfumed. Both
Cattleyas and Phalaenopsis have been used extensively by artists as the subject
for flower paintings with great impact.
Wee jobs to do this week
Take advantage of small areas of land becoming available as
mid summer crops get harvested allowing sowings of lettuce, radish, spring
onions and rocket and even some Chinese cabbage. These will give salads for
late autumn use. Early potatoes, peas, broad beans, cabbage and cauliflower and
soon onions will all get lifted to release some land though some onions are
having a hard time with the warm but wet weather and white rot is gaining the
upper hand.
END
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