Dawn I pulled this off of the web, hope it helps:

Pyracantha has many uses in the garden, but it is probably most commonly grown as an evergreen, wall shrub. This is hardly surprising because it is one of the most effective methods of displaying the berries to full effect. In the autumn and early winter, the glowing, brightly coloured berries greatly enhance walls  especially when an orange-berried variety is grown against red sandstone that is prevalent in many parts of Cumbria. Perhaps Pyracantha is best confined to vertical growth against a wall in order to keep its thorny armour at a safe distance. However, it is quite often left to grow as a free- standing shrub in spacious gardens or large scale, road side plantings where it can reach a height of about three metres. Although they are most well known for the vibrancy of their berries, their flowers are also extremely attractive in late spring. Almost all varieties have white or cream coloured flowers, and if the plants are situated in a sunny aspect, a haze of numerous flowers is guaranteed.

Pyracantha is a member of the rose family and like many climbing roses, if grown against a wall, it prefers a warm, south facing position. When planting a young specimen, it will become established quite quickly providing it is given free drainage and an open soil. If the soil is heavy, it is a good idea to incorporate grit and organic matter, for example, leaf mould or well-rotted material from the compost heap. The young roots do have an abhorrence of wet, compact soils and struggle to survive, especially throughout the winter months when the soil is also cold. Like many newly planted specimens, they are adversely effected by the combination of continuous damp and cold.

Flowers and berries are produced on wood that is at least one year old and this must be remembered when pruning. During the summer months, straggly growth can be removed for cosmetic reasons, but it is best to do the majority of formative pruning just as the flowers are beginning to fade  the presence of the flowers acts as an indicator for the potential crop of autumn berries and prevents pruning that may be too harsh.

The copious quantities of berries produced by Pyracanthas can become the object of desire for birds, especially blackbirds, and it is not unknown for them to strip whole plants. It has been noted that the birds are not so keen on yellow berried varieties such as P. rogersiana Flava which has been awarded a Royal Horticultural Society "Award of Garden Merit". Birds are also attracted to wall grown specimens as potential nesting sites among the dense tangle of short, twiggy branches.

One of the most commonly grown species, and most abundantly fruiting, is P. coccinea which has bright, coral-red berries. This species was introduced to Britain in 1629 and is the origin of many varieties including Lalandei which tends to be more vigorous with larger berries.

Thank You oh so much! now I know that I can place it on my "blank" wall. There is nothing there to stop its growth.

they are very hardy plants and respond well to pruning. dont be afraid to hack at those things or they can take over.