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Garden Article

Jean Gillooly-Rowan County Master Gardener Volunteer

September 6, 2002

            On a recent l00 degree Saturday I visited four Rowan County Garden Centers, searching for plants to place in various containers for the fall season.  I found a variety of plants and learned that almost anything can be grown in containers. Since that day some rain has fallen.  But the drought is still here so planting in containers will help conserve water.
            Using annuals for planting is one choice.  For an arrangement of mixed annuals, begin with a taller plant such as caladium or dracaena in the center of the pot.  Add a selection of marigolds, zinnias, begonias, geraniums, wave petunias, coleus or even impatiens in the next ring.  Sweet potato vine or   "gold dust" ivy could trail over the side.  Test out the arrangement by placing the potted plants in the container before planting them. 
            A pot of perennials might have dracaena, salvia or a short fountain grass in
the center.  Then put five tulip bulbs in the very bottom of the pot for spring bloom. Next place gerbera daisies, hardy asters, angel wing begonias, geraniums or Mexican heather around the taller plant.  (Pentas and wave petunias are annuals but could add different colors and textures here.)  Place this second row of flowers with a slight tilt outwards for a uniform look.  Trailing vinca, like "Mediterranean Rose" or creeping vervain could spill over the sides.
            Fall vegetables can make a colorful pot.  Swiss chard could be in the center with red cabbage and red sails lettuce or purple cabbage, leaf lettuce and parsley among the many possibilities.
            A pot of perennial herbs which could be brought inside later might include rosemary, chives, thyme, oregano and parsley.  When indoors, keep them in a cool, sunny spot.  Water sparingly.
            Containers are available in many sizes, shapes and materials.  The size depends upon the number and size of plants to be used.  The materials could be terra cotta, concrete composition, foam, resin, clay, molded polymer or plastic.  All must have drainage holes to get rid of excess water.  Plastic pots require less watering than clay pots because they are less porous.  Decorative ceramic pots which have no drainage holes can be used for cache pots.  Plastic or clay pots can be placed inside a decorative pot, enough larger to put slightly dampened spaghnum peat  moss in between the two containers to help retain moisture and soak up any excess  water.
            The best soil mix for containers is a high grade potting soil, mixed with fine pine bark mulch which is also called soil conditioner.  The ratio should be 2/3 potting soil to1/3 fine pine bark mulch.  If the potting soil does not contain any fertilizer add a 5-10-5 liquid fertilizer to the mix, according to the package directions.  A product called "Soil Moist" in granular form will help hold water in the soil also. Mix and water thoroughly.  After planting leave one inch between the top of the soil and the top rim of the pot for watering without spillover.
            In addition to needing far less water, containers have other advantages.  The lighter ones are portable and can be moved to other locations or to a garage to avoid early frost.  The larger ones can be covered with old sheets when frost threatens.  (Remember to remove the covering in the early morning.)  Containers are flexible.  I saw a large, decorative one with straight sides which was designed to hold several flowers right in their nursery pots.  The next season the pots can be replaced easily for a new show. A colorful pot or two of fall plants can brighten up a dry yard and be easy to maintain as well as being water wise.

 

Jean Gillooly is a Master Gardener Volunteer with the North Carolina Cooperative Extension Service—Class of 1995.