Gardening for Profits, Gesnriads
Achimenes
Achimenes, sometimes called nut orchids or Japanese pan-sies, grow from rhizomes shaped and constructed like small pine cones. The plants are easy to grow, unusual enough to make good sellers, and sure-fire material for hybridizers. In warmer sections, they can be planted directly in the shaded outdoor garden or rock garden. I have liked them in a window or patio box and for hanging baskets in lath house or greenhouse.
?The demand for achimenes is good; the supply is short. Culture is the same as for gloxinias except that they can be planted four rhizomes to a 4-inch pot, five to a 5-inch pot, etc. Some of the plants grow upright; others (usually depending on the amount of light) trail over the pot edge. This makes them ideal for hanging baskets. Achimenes, like gloxinias, need a rest after flowering. Store them in their pots at 55 degrees F., or depot them and store in sacks of vermiculite.
Flowers of achimenes are similar to petunias, with upturned faces in colors from white through pink, red, blue, and purple. Collectors’ favorites include the red-flowered Master Ingram; Mauve Queen with red dots on a golden throat; white Margarita; bright red A. coccinea with ferny leaves; and purple Wetterlow’s Triumph. The best known variety is Purple King.
Propagate achimenes through the rhizomes (which multiply each season), by rhizome divisions (each scale acts as a seed), or through seed.
Trichosporum
Bright red tubular flowers from leathery vaselike calyxes, waxy oval leaves and a graceful vinelike growth distinguish aeschynanthus (trichosporum). These make excellent pot or hanging basket plants. They can be grown in any soil suitable for gloxinias or African violets, in any of the mixtures, as peatmoss, sphagnum moss, and chicken grits or equal parts of osmunda fiber or shredded bark and peatmoss, and in the same temperature recommended for African violets. Culture is easy.
Aeschynanthus lohbianus has dark green leaves and scarlet flowers spilling from purple-brown calyxes; A. marmoratus is characterized by variegated light and dark green leaves, maroon beneath. The flower, less showy than that of A. lobbianus,
is reddish orange. A vigorous species with long waxy green leaves and bright orange flowers is A. speciosus. Propagate these plants through cuttings or seed.
Columnea
Columneas are handsome trailers. One grower who specializes in orchids and columneas considers his older columnea plants covered with flowers more spectacular than many of the orchids. Species include the yellow-flowered C. tulae var. flava, the red-flowered C. Alleni, C. Banksi with shiny leaves, and C. gloriosa with small, hairy, near-brown leaves.
Grow these trailers in soil or “substance” as suggested for aeschynanthus. They are warm-house plants responding to the same light conditions as African violets. Propagation is through cuttings or seeds.
Columneas are collectors’ items for you to grow only in the warm greenhouse. C. tulae however makes an interesting house plant, and being a yellow-flowered gesneriad, it is popular with African violet and gloxinia fanciers.
Cuttings of these plants ship well and most collectors will purchase rooted or unrooted ones. A single, well-grown, 2-year-old plant will produce a dozen or more cuttings which sell generally for about 35 cents apiece unrooted, 50 cents rooted.
Episcia
While this is a gesneriad, and so related to the Saintpaulia, it is not a “red violet.” But the common name of Flame Violet may stimulate sales. We can use it and still be ethical only by including the proper identifying word, Episcia, in all advertising and promotion.
I know of no company that purchases episcia seeds by the ounce. I sell seeds in mixtures at $5.00 per thousand. One company buys about 20,000 a year, two others each 5,000. This amount of seed is taken from plants in two flats each measuring 14 by 27 inches.
The wooden flats hold the episcias for 2 years. Then I dump them out (in the fall), trim out dead pieces, and replant in fresh soil. By this time they have multiplied enough to fill 6 flats of the same size.
Episcias send out stolons (runners) very much like the strawberry begonia (saxifrage). Flowers are white, yellow, pink, lavender, and red.
Episcias seem not to have the flower-producing capacity of African violets. However, many growers reduce bloom unnecessarily by putting plants in a spot lacking sun. True, they make excellent cover plants for under benches and in shady greenhouse nooks?and the foliage on the hairy ones become deeper colored in shade. But flowers are always scarce on plants grown in this way.
Since I grow my episcias almost exclusively for seeds, I plant rooted cuttings of several varieties in each wooden flat of peatmoss, sand, leafmold, and light loam. The bottom of the flat is first covered with clay pot chips and charcoal pieces. All varieties except the blue-flowered ones are placed where they receive 1500 foot-candles of light at 12:30 P.M. on a bright summer day. They are always kept well moistened and?note well?they require more water than African violets. In this bright spot, they produce maximum bloom. After pollination, the seed capsules form; they resemble bunches of small grapes. The red and lavenders are most congenial, hybridizing easily one with another. Here are some of my favorites?all easy to propagate, all generous with seeds:
Episcia acajou; Chocolate Soldier; E. cupreata, which doesn’t take full sun, but without some sun will fail to flower, the variety, viridifolia, which must have a blaze of light to bring out foliage and flower color; Silver Sheen; lilacina; and the long?time favorite reptans (fulgida) ? (which most people think of as the “red violet”).
Episcia dianthiflora and E. punctata are of easy culture but they have one point of difference from other episcias, it takes 5 to 9 months for seeds to ripen, whereas the usual ripening period is 6 weeks.
Greatly prized among collectors is the reptans variety Lady Lou, a variegated pink-green and brown-leaved form. Most people find it more difficult than the parent plant, and it often reverts back to the brown and green leaf coloration of E. reptans. The brown-leaved, pink-flowered Pinkishia, fairly new, is easy to propagate. Tropical Topaz should prove as easy as the plants it resembles?E. viridifolia, but I have found it somewhat difficult (though it may be that I do not have the true one). My plant came directly from Panama, as did the one bearing the species name. If it does prove easy, it will make a hit with window and greenhouse gardeners.
Episcias are best propagated through stolons or seeds; leaf cuttings take too long to produce sizable plants. Plant the stolons directly into pots or flats of light soil?or any good growing media. You can sell them from 2- or 3-inch pots?several in a pot or hanging basket?or as cuttings.
If you propagate through seed, you will get a variety of colors and forms from a mixed package. I have reports from customers of several pink-flowered sorts springing up among seedlings grown from my seed mix. And foliage is as varied as that of coleus. These plants are a hybridizer’s dream, and flowers come in white, pink, lavender, red, and yellow.
In the episcia blossom, pollen ripens several days before the pistil is ready to receive it. When the pistil elongates and shows beyond the petal edge, pollination time is at hand. Choose pollen from a one- or two-day flower, and apply it to the pistil with a brush or your finger tip. You may have to pollinate on two successive days to assure success.
The rounded seed capsule ripens in 6 weeks. Each seed has attached to it a tiny blob of albumen which sustains the embryo.
Seeds are larger than those of African violets but require approximately the same care and seedlings flower in about the same time.
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