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Allium is a genus of about 700 species of spring, summer and autumn flowering rhizomes and bulbs found naturally in dry and mountainous regions of the N. hemisphere. Commonly called onion these are excellent planted in groups in borders and rock gardens. There is no mistaking this genus by smell, several have a culinary use and all can be dried for arrangements. Contact with the bulbs may irritate skin and aggravate allergies. Allium likes fertile well-drained soil full sun. Many self-seed and may take up to 2 years to germinate. Fungi will attack in damp conditions rot, mildew, rust, smut and mold may become a problem.
Agapanthus is a genus of 10
species of vigorous perennials native to southern
Caladium is a genus of 7 species of tuberous perennials naturally found in
woodland margins of tropical
Canna is a genus of about 50 species
native to tropical North and
Crocus is a genus of about 80 species of
dwarf, cormous perennials found naturally on every continent except
Fritillaria is a genus of about 100 species of bulbous perennial found
in a wide range of habitats from woodland to open meadows and high screes
particularly abundant throughout the
Gladiolus is a genus of 150 species of bulbous plants with over 10,000 different cultivars. Classification is broken down into three main groups distinction is made by the flower structure and bloom time. Glads need an abundance of moisture particularly after the sixth leaf develops. Planting should be done biweekly for continuous show, two inches deep and 18 inches apart. Staking or support may be necessary. They like full sun or part shade in moderately fertile soil. Mold spider mites thrips and aphids may be a problem.
Hemerocallis commonly called daylilies
is a genus of about 15 species of which there are over 30,000 cultivars. Found
naturally in the forest margins, valleys and meadows thought
Hippeastrum commonly called amaryllis is
a genus native to a small southwest coastal area in
scent but the blooms can be a feast for the eyes. The bulb can be saved and used again next year, letting the bulb go dormant during the fall after foliage is spent. Best way to store bulbs is in shavings or as an inspired friend has done in shredded paper. These bulbs can be pricey - average cost is 6 - 8 dollars apiece.
Hyacinthoides commonly referred
to as bluebell is closely related to scilla is a genus containing
4 species of vigorous bulbous perennials naturally found in the deciduous
woodland and moist meadows of
Hyacinthus or hyacinth is a genus of 3 species of bulbous perennials native to W. and C. Asia, and are grown for their very fragrant flowers. Depending on your zone determines the depth to plant the bulb in well-drained, moderately fertile soil in sun or part shade. Prone to gray mold and bulb rot.
Iris is either a rhizome or bulb and is a complicated genus. Iris is broken down botanically into subgenera, section and series based on cultural needs. The main division of rhizomes is bearded, crested and beardless, the bulbous irises are all beardless, they are the cute smaller irises commonly called Dutch iris. All rootstock should be planted close to, or on the surface of the soil. Found naturally throughout the N. hemisphere in a wide variety of habitats. Fertilizers high in nitrogen should be avoided. The most difficult aspect of growing iris is location they are rather particular, but full sun, well-drained soil, avoids mulches. Prone to borer, slugs, snails, weevils and aphids and if they don't get 'em blight, rot, rust and fungus may. Once a favorable spot is found for iris they will keep dividing and generally require little attention. The leaves may be cut back without concern approximately 8 weeks after blooming.
Lilies are the aristocrats of the bulbous plants. The genus contains over 80 species and is further broken down into 9 divisions based on petal arrangement. An excellent choice in woodland settings, rock gardens, bed and borders or a dramatic focus in a stand by themselves. They grow well in a variety of soils and propagation is off the bulblets that generate above the base of the old stem after flowering. Always propagate from healthy stock. Lilies are vulnerable to several types of viruses transmitted by aphids and also gray mold. Well-drained soil is a must.
Narcissus is the genus commonly called daffodil and contains about 50 species of bulbous perennials. Narcisuss are grouped in division 1-10 based on petal arrangement. Tolerant of a range of soils but like mist earth during the growing season, full sun to part shade. Cut back leaves 6 weeks after bloom has faded.
Paeonia commonly called peony
is a genus of about 30 species of tuberous, clump forming, herbaceous
perennials native to meadows, scrub and rocky places from
Scilla is a genus of
about 90 species of bulbous perennial found in woodlands, alpine meadows and by
the shore throughout
Tulipa better known as tulips is a genus of over 100 species divided into 15 groups defined by flower characteristics, most should be used as annuals as hybrids are unreliable repeat bloomers. The cultivar determines soil preference generally plant at a depth of 8 inches in fertile well-drained soil full sun. Prone to root and bulb rot in wet or poorly drained soil, mold, slugs, snails, aphids and nematodes are a problem. Keep groupings to a single species for greatest effect.
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