Container gardens can create a natural sanctuary in a busy city street, along rooftops or on balconies. You can easily accentuate the welcoming look of a deck or patio with colourful pots of annuals, or fill your window boxes with beautiful shrub roses or any number of small perennials. Whether you arrange your pots in a group for a massed effect or highlight a smaller space with a single specimen, you'll be delighted with this simple way to create a garden.

Container gardening enables you to easily vary your color scheme, and as each plant finishes flowering, it can be replaced with another. Whether you choose to harmonize or contrast your colors, make sure there is variety in the height of each plant. Think also of the shape and texture of the leaves. Tall strap-like leaves will give a good vertical background to low-growing, wide-leaved plants. Choose plants with a long flowering season, or have others of a different type ready to replace them as they finish blooming.

Experiment with creative containers. You might have an old porcelain bowl or copper urn you can use, or perhaps you'd rather make something really modern with timber or tiles. If you decide to buy your containers ready-made, terracotta pots look wonderful, but tend to absorb water. You don't want your plants to dry out, so paint the interior of these pots with a special sealer available from hardware stores. Cheaper plastic pots can also be painted on the outside with water-based paints for good effect. When purchasing pots, don't forget to buy matching saucers to catch the drips. This will save cement floors getting stained, or timber floors rotting. Always use a good quality potting mix in your containers. This will ensure the best performance possible from your plants.

If you have steps leading up to your front door, an attractive pot plant on each one will delight your visitors. Indoors, pots of plants or flowers help to create a cosy and welcoming atmosphere. Decide ahead of time where you want your pots to be positioned, then buy plants that suit the situation. There is no point buying sun lovers for a shady position, for they will not do well. Some plants also have really large roots, so they are best kept for the open garden.

If you have plenty of space at your front door, a group of potted plants off to one side will be more visually appealing than two similar plants placed each side. Unless they are spectacular, they will look rather boring.

Group the pots in odd numbers rather than even, and vary the height and type. To tie the group together, add large rocks that are similar in appearance and just slightly different in size. Three or five pots of the same type and color, but in different sizes also looks affective.

With a creative mind and some determination, you will soon have a container garden that will be the envy of friends and strangers alike.

Bill McRea is the publisher of Garden Facts also Garden Decor and Landscape Trees Landscaping and Gardening with information and products.