Some new vegetables and flowers are available for 1978 gardeners. Each year they seem to become more and more spectacular and perhaps this is no more than should be expected with all the knowledge that is being accumulated about plant breeding.

Burpee Seed Co., Warminster, Pa. 18991, offers two unique vegetables and two extra pretty-flowers in its catalog which will be sent free upon request. Burpee's Butternut squash lets you grow the butternut type in one-fourth the space of the usual vine type. Royal Oak Leaf lettuce, a loose-head variety with oakleaf-shaped foliage, provides tasty salad greens well into hot summer weather.

The new Burpee flowers are Bouquet Hybrid zinnias, bred both for garden display and for cut flowers, and Patio sweet pea, an erect dwarf, bush type sweet pea 9 inches tall with larger, showier, more profuse blooms on longer stems than other dwarfs.

The catalog also includes Illinois Xtra-Sweet sweet corn, which stays sweet longer than usual varieties, "twice as sweet as others at harvest, four times as sweet 48 hours after picking," Burpee claims.

Also in the catalog is Lady Godiva (naked edible seed) pumpkin, developed by the Department of Agriculture for its seeds rather than its flesh. The "naked" or hull-less seeds are delicious raw or roasted and high in protein.

George W. Park Seed Co., P.O. Box 31, Greenwood, S.C. 29647, features three new varieties of flowers and two vegetables. The flowers are Lace Mixture bybrid dianthus, White Polka Dot hypoestes and Tie Dyed Gold coleus.

The new Park vegetables are Scoop Hybrid cantaloupe and Kengarden watermelon. Scoop produces luscious ripe fruit two weeks earlier than the earliest known varieties, Park claims, and Kengarden watermelon will produce one to three 12-pound melons in no more space than a bush summer squash.

The Park catalog will be sent free upon request.

Harris Seeds, Moreton Farm, Rochester, N.Y. 14624, includes in its catalog, which will be sent free upon request, Sugar Loaf, an extra-sweet, sweet corn, Tania Boston lettuce, with beautiful deep green, tender heads of delightful quality, and Presto, a small-fruited salad tomato on patio-sized vines, well-adapted for growing in pots or garden.

Sixteen new vegetables and 26 new flowers are the contribution of Stokes Seed, Box 548, Buffalo, N.Y. 14240. They are all in the new Stokes Seeds catalog, which will be sent free upon request. One of the vegetables is Kandy Korn, a super-sweet corn that doesn't lose its sweetness for days after picking.