Whether you prefer to grow your vegetables indoors or
out, there are trade offs involved. Soil type and preparation, watering
practice, light control, disease and pest control, and other tasks will
differ between the two environments. Which is preferable can only be an
individual choice, based on individual circumstances.
Preparing
and maintaining the soil for outdoor vegetable gardening can be a major
chore. Nutrients can be exhausted by yearly planting of the same crop.
Fertilizers get leached away. Soil disease is more difficult to
control. Breaking up clay or changing pH in a large area requires
considerable effort. But you do save the effort of preparing multiple
containers and changing them out.
Indoor soil preparation
requires less fertilizer, but one has to be more careful to control the
amount. Excess is more readily retained. The soil has to be prepared
precisely in order to provide the right balance between drainage and
moisture retention. Outdoor soil is much more self-regulating. More
plants are killed by overwatering than underwatering.
But it is
much more difficult to devise an automatic watering system for indoor
gardens. Outdoors, a simple and inexpensive drip irrigation system is
easy to install and use. Indoors, an automatic sprinkler system would
be very costly and messy if it isn't done just right. But if you have
only one or two containers and enjoy hand watering, it might well be a
negligible effort.
In outdoor vegetable gardens there is rarely a
problem with adequate sunshine, provided they're planned correctly. In
most climates during the Summer it's not difficult to give plants the
five or more hours they need daily. Inside the house that can be
tricky. Few will want to move plant containers around all day, but
finding a single window that receives adequate light without burning
the plants can be hard.
But the type of light and shade is
certainly much easier to control indoors. Drawing a window shade or
closing louvres when the sun is too hot is simple. There are even
automatic systems that will do it for you. And putting a plant near a
glass window provides something of a natural greenhouse effect without
the expense of a greenhouse.
Diseases and pests can be a problem
in either environment. But fighting them outdoors is decidedly harder.
It requires constant vigilance and generally more chemical assistance.
Fungi are more likely from moisture on the leaves during the night.
Insects have easier access to lay eggs that become larvae.
But
the smell of controls, either in the form of artificial chemicals,
organic substances or trap crops can be more unpleasant than many would
want inside. Most insecticides don't have pleasant odors. Even
plant-based oils can be overpowering, and they are much more expensive
than other types of chemical control.
In the end, each grower
will have to weigh the pros and cons for his or her particular
situation. Either form of vegetable gardening requires effort, but both
bring great rewards when done well. There's nothing quite like fresh
vegetables for good taste and great health.