If you haven't been sitting under a shady tree during our simply sensational summer weather it's probably because you don't have one.

As a matter of fact, if you take a good look around at our newer homes, many on smaller lots, shade trees tend to be one of the rarest species of trees in the landscape.

Considering the many attributes of these tall, stately trees, we're really missing a welcome addition to our homes.

The most common misconception about shade trees is that they grow 100 feet overnight, drop tons of leaves to be raked up each year and have root systems which demolish septic tanks and fields.

Added to these alleged problems are concerns about insects, disease and pruning. If these are the reasons that folks are not planting shade trees it is unfortunate because basically they are unfounded fears.

Shade trees can also be planted for reasons other than shade. When I select a tree for a landscape, I always look for two or three ways in which it can enhance the overall landscaping theme.

Colour is one of the most important factors and whether it be foliage colour during the growing season or a spectacular fall performance it will brighten up the yard.

For summer colour consider the crimson sentry maple, the beautiful variegated white, green and pink acer negundo flamingo, the brilliant yellow of princeton gold maple, the rich colour of the narrow red obelisk beech, the golden robinia or the chartreuse sunburst locust tree.

Fall-coloured specimens are too numerous to mention but my favourite is the acer rubrum, which begins its red glow in late August.

Form is another important consideration. Tall, stark buildings or farm and commercial buildings too often spoil our vistas. Large pyramidal, round or columnar trees can soften and screen such structures and allow them to become more visually acceptable.

Let's talk about the cooling effect of a shade tree.

I've mentioned before that one average-sized shade tree has a cooling effect equivalent to four household air-conditioners running 12 hours a day.

The net result is that your house could be 12 to 15 degrees farenheit cooler during our summer hot spells. Think about that one as you lay awake at night, tossing and turning in an 85 to 90 degree farenheit room.

Another big bonus is that the cooling effect of a shade tree doesn't arrive in the form of a hydro bill at the end of each month.

If I haven't convinced you yet that shade trees are a good investment, let me add the fact that they'll keep your yard cleaner by collecting on their leaves the dust particles which would blow into your home.

Let me also point out the fact that they help in a small way to rebuild the ozone layer around our earth. They provide homes for birds, which in turn minimize your insect populations and act as a sound barrier to absorb a good deal of the noise from local traffic.

Shade trees also provide a great source of entertainment for kids, whether it be branches for swings, homes for tree houses or just plain climbing.

Finally, they provide a nice retreat on a sweltering afternoon.

If you're still not convinced about huge shade trees, consider a slow-growing species or some of the new compact, columnar varieties.

If it's leaves you're worried about, pin oaks keep theirs all fall and winter. If insects are concerning you, gingkos, liquidambars and liriodendron are all free of pests.

Many shade trees have a fibrous root system which is quite safe in even tiny lots. When you weigh the pros and cons, I think it's fairly evident that shade trees are a welcome addition, not only to our homes, but also to the environment.