Yards and gardens generally look a little frayed by this time of the year. The final really hot days that usually come at the end of a long, hot summer are especially hard on plants, says LSU AgCenter horticulturist Dan Gill.

Gladiolus, or sword lily, has been a favorite of Southern gardeners for generations.

LSU AgCenter scientists are nearing the end of a two-year weed control study designed to help Louisiana iris growers save money. It is the only weed control study in the state concentrating on field production of Louisiana iris, and its purpose is to increase yields and reduce weed competition.

A relatively new category has been added to All-America Selections, home of the popular All-America Rose Selections, according to LSU AgCenter horticulturist Dr. Allen Owings. That group is daylilies.

October is a transitional month in Louisiana flower gardens. Many warm season annuals have finished or are finishing, and gardeners' thoughts are just beginning to turn to cool-season bedding plants for fall, winter and spring color.

Sweet peas are an excellent cool-season annual for Louisiana. The flowers are popular for cutting and bundling because they come in an array of colors and have an intoxicating scent. Seeds should be sown directly in the garden in October or transplanted from containers in November. Sweet peas are vines so the plants need support (fence, netting, etc.) or a trellis to grow on. Sweet peas start blooming in late March and last up to two months, longer if deadheaded regularly.

Efforts in 2003 and 2004 included evaluation of cannas, coleus, angelonias, purslane, lantanas, perennial verbena, annual and perennial salvia, vinca, zinnias, melampodium, petunias, rudbeckia, phlox, daylilies, dianthus, ornamental kale, ornamental cabbage, calendula, violas, pansies, ornamental sweet potatoes, garden mums, African and French marigolds and others.

Interest in daylilies is still strong despite rust problems over the past several years. New daylily selections and All-American daylily winners need to be evaluated in the Gulf South for landscape performance.

Violas, a close relative to the pansy but with smaller flowers, can provide a mass of color on the darkest winter day. Several viola series perform well in Louisiana, but sometimes it's difficult to choose the viola you want with so many series and colors available. The pictures included on this page are all from the annual bedding plant trials performed at the Burden Center in Baton Rouge.

The bougainvillea is a tropical vine whose bright, vibrant flowers positively glow in the landscape. Bougainvilleas should produce two or three beautiful displays of flowers in spring, summer and fall. The colorful parts are actually modified leaves called bracts. The true flowers are small and white.