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Achillea is commonly referred to as yarrow is a genus with about 85 species of deciduous perennials from temperate regions of the N. hemisphere. A huge variety exists but generally they prefer moist but well-drained soil in and open site, full sun. Aphids may be a problem as well as powdery mildew.
Ageratum (as seen in the perennials picture), is commonly called floss flower is a genus of about 40 species of annuals, perennials and shrubs found naturally in diverse habitats in tropical and temperate areas of North and South America. Ageratum bears small rounded flower heads, 30 - 50 per stem, often in muted shades of blue, white or pink. A great plant for late season flowers, adapts well to containers or beds and borders. Ageratum likes fertile, moist, well-drained soil, full sun to part shade. Sow seeds in the spring or autumn. Generally, if grown in the northern zones more pest free, but still subject to powdery mildew and rust during dry seasons and blight is a problem during cool, wet weather. The plant itself resembles mint until bloom time.
Alcea, commonly called hollyhocks
is a genus of about 60 species of biennials and short-lived perennials
naturally found in temperate grassland or rocky regions of
Alchemilla is a genus of about
250 species inhabiting meadows and woodland areas. Commonly called lady’s mantle it is found in temperate
arctic zones and mountain regions from tropical
Anemone is a genus of about 120 species of perennials found
worldwide and they are commonly called windflower.
Grown for their open saucer-shaped flowers their show runs from late summer
into fall. Cultivars that originate from the
Anthriscus is best known by the common name of Queen Ann’s lace and the genus contains about 12 species of annuals and perennials that grow naturally in wasteland, woodland and grassland areas of the N. hemisphere. Propagation and pests not worth mentioning.
Aquilegia, commonly called columbine, is a genus of about 70 species of perennial plants native to meadows, woodland and mountainous regions of the N. hemisphere. They like fertile, preferably moist, well-drained soil, and full sun to full shade. Divide in early spring or in the fall. Susceptible to mildew and rust a particular favorite of aphids, leaf miners and caterpillars.
Asclepia aka butterfly weed commonly called milkweed is a genus of about 110 species of perennials, shrub and sub shrubs beloved by butterflies. Naturally found in temperate grasslands, marsh and scrub areas of the western hemisphere. They like fertile well-drained soil full sun. Propagation is by seed in spring or division in spring or fall. May be prone to whitefly, mites and aphids, fungal and bacterial problems as well, you may want to choose not to treat asclepia as it will transfer poison to the caterpillar.
Aster is a genus that contains about 250 species of annuals,
perennials and sub shrubs found naturally in a variety of habitats from
mountainous sites to moist woodlands, all but a few
are native to
Astilbe is a genus of about 12 species of densely clump-forming
perennials found naturally in moist sites, mountain ravines, woodland areas of
Boltonia is another taller genus of native American aster-type flower heads but this genus only has 8 species. Please check aster for further information
Clematis is a genus of more than 200 species of evergreen and deciduous perennial climbers. Found naturally in a variety of spots throughout the N. and S. hemispheres. They like fertile, humus rich, well-drained soil, full sun or part shade. Pruning is essential with all clematis and guidelines are very cultivar specific based on whether they bloom on previous years shoots or current season growth. Prone to scale, whiteflies, earwigs and aphids, wilt powdery mildew; rust, fungal spots and cankers are common.
Convallaria commonly called lily-of-the-valley is a genus of 3 species found naturally in woodland, scrub and alpine meadows in northern temperate regions. Pendent, bell-shaped, fragrant, mostly white flowers, is the attraction; a hardy groundcover enhances its appeal. Convallaria like humus-rich, moist soil, full sun or full shade. Divide pips in autumn keeping the soil moist until established. This genus is virtually pest and disease free.
Campanula is a genus of about 300 species of annuals, biennials and perennials found naturally throughout the N. hemisphere in very diverse habitats from high alpine rock crevices to moorlands, meadows and woodlands. The habits range from low tufted mats, dwarf, or trailing, to tall and upright. The flowers are tubular, bell-shaped or star-shaped and haven't a scent worth noting. Obviously soil requirements vary depending on the species and habit but full sun to part shade, well drained will suffice. All will reseed profusely so best bet is to cut back after flowering. Prone to slugs, snails, weevils, mites and aphids. Powdery mildew, rust, blights may be a problem. Color ranges from deep purple to light blue, soft pink or white. Commonly called bellflower taller cultivars may need staking.
Chelone, commonly called turtlehead,
is a genus of about 6 species of perennials native to moist woodland, prairies
and mountainous areas of
Chrysanthemum is complex genus with categories and subcategories, twelve different flower head distinctions with a further breakdown as to flowering time. Then they are even more minutely identified further into five more classifications. Generally gardeners think of non-disbudded chrysanthemums, which means we allow them to grow freely and they grow in sprays and produce several blooms per stem in a variety of blossom forms. They flower over a long period of time and are suitable for beds and border, wildflower and rock gardens, containers and all are excellent for cutting. They like full sun, fertile, moist but well-drained soil. Provide support if your mums are excessively tall with soft twine and stakes. Water freely in dry weather and apply a balanced liquid fertilizer every month. Propagation is from seed in the late winter or spring. Divide in spring. Prone to aphids, earwigs, nematodes, miners, mites and whitefly. Susceptible to fungal rot, mold, mildew and white rust. Viruses may cause stunting, yellow markings and puckered leaves.
Coreopsis is commonly called tickseed
and is a genus of about 100 species of softly hairy annuals and perennials.
Naturally found on prairies and in woodlands throughout the
Delphinium is a genus of about 250 species of annuals, and
perennials found in mountainous regions worldwide except
Dianthus is a huge genus with over 300 species of mostly evergreen,
low growing annual and biennials found naturally in meadows and mountains in
Dicentra or bleeding heart is a
genus of 20 or more species of annuals and perennials native to
Digitalis is a genus of about 22 species of biennials and
perennials naturally found in
Draba is a genus of about 300
species of mat or cushion-forming perennials found naturally in cold temperate
Echinacea commonly called coneflowers
is another one of those plants to be wary of. This is a genus of about 9
species of perennial found naturally in prairies, open woodland and hillsides
Erigeron commonly called fleabane
is very similar to an aster. The difference is the set of the flowers on the
stem and erigeron grows to a shorter overall height but otherwise very
aster-like. Erigeron is a genus of over 200 species of annuals and perennials
and is another native American. Grown for their late
blooming daisy-like flower heads and like asters they too are prone to mildews,
smut, and blight. Care during the growing season is the same and it is
recommended to cut back to ground level in autumn to retain neat growth. .
Eupatorium is a genus of over 40 species of perennials occurring naturally in dry sandy conditions, woodland, pastureland and swamps just about worldwide. More recognized by the common names as Joe Pye weed, snakeroot, boneset and mistflower. Whatever the common name given a species eupatorium bears nectar-rich flowers beloved by butterflies and bees. All like moist soil full sun divide hardy species in the spring. Prone to rust powdery mildew, and smut.
Geum is a genus of about 50 species of perennials native to streamsides, moist meadows and woodland areas throughout the Northern hemisphere. Grow in fertile, well-drained soil, full sun. Propagation is by seed either in spring or autumn. Prone to downy mildew, powdery mildew and smut.
Heuchera, commonly called coral
flower, is a genus of about 55 species of evergreen and semi-evergreen
perennials found naturally in woodland settings in
Iberis is the genus but more commonly called candytuft and contains about 40 species of annuals and perennial plants native to soil with high calcium carbonate content, otherwise known as chalk. Propagation is from seed in situ in spring or autumn. Prefers cooler weather for blooms iberis will generally bloom again in the fall. No pests or problems of note.
Kniphofia, commonly referred to as red-hot-poker is a genus of about 70 species of evergreen or deciduous
rhizomatous perennials found naturally in moist places in southern and tropical
Ligularia is a genus 150 species strong of robust, often coarse
perennials mostly from C. and
Linaria commonly called toadflax is a genus of about 100 species of annuals, biennials and perennials naturally found in temperate regions of the N. hemisphere. The flower is 2-lipped, spurred, in white, pink, red but most common in shades of purple with a yellow center and resembles a single snapdragon with non of its lovely manners. Toadflax likes moderately fertile and sandy soil full sun. Aphids, flea beetles, downy mildew, and smut may be a problem. Sow seed in situ early spring
Lobelia is a genus of about 370 species of annuals and perennials and shrubs found worldwide. Given the multitude of species lobelia's habitat ranges greatly from marshes, meadows, woodland areas, mountainous slopes to desert regions. Lobelia varies from species to species too, but all have brightly colored flowers, simple alternate leaves and 2-lipped, tubular flowers. Lobelia likes deep fertile soil, full sun or part shade, and they enjoy heavy feeding. Propagation is by seed in late winter or division in spring. Prone to rust, smut, leaf spot and slugs.
Lupinus is a genus of about 200 species of annual, and perennials
naturally found in the
Malva or commonly called mallow is a genus of about 30 species
of annuals, biennials and perennials found naturally in dry, open areas and
Monarda is commonly called bee
balm, and is a genus of about 15 species of annuals and clump-forming
rhizomatous perennials naturally found in prairies and woodland setting
Oenothera is commonly called evening
primrose or sundrops and is a
genus with about 125 species of annuals and perennials found naturally across
Omphalodes is a groundcover related to Forget-me-nots. Bicolor flower of vivid true blue and white against green foliage grows by creeping and spreading. 6-8 inches high, 15 - 18 inches wide.
Papaver is a genus of 70 species
of annual, biennial and perennials naturally occurring on every continent
Parthenocissus is better known as Boston ivy or Virginia
creeper and the genus contains about 10 species of deciduous tendril
climbers naturally found in the
Perovskia better known as Russian
sage is a genus of 7 species of sub-shrubs that occur naturally in
Physostegia is a genus of 12
species of erect deciduous perennials native to the eastern areas of
Primula is a genus of about 450 species of herbaceous perennials found naturally in bogs, marshlands and alpine areas worldwide. The zone very often dictates the sun requirements, all but the most northern, part shade. Soil should be moist, humus rich, and gritty. In growth water and feed freely, sow seeds late winter in containers, divide in early spring. Prone to aphids, mites, slugs, mold, root rot and rust.
Prunella commonly known as selfheal
is a genus of 7 species of spreading perennials that root very freely at the
node. Naturally found on dry grassland, open woodland and sunny banks in
Rudbeckia commonly called black-eyed-Susan
is a gnus of about 20 species of annuals, and perennials native to
Salvia is a genus with about 900 species of annuals and perennials, shrubs and tubers. Salvia is found naturally worldwide usually in sunny sites, dry meadows and grasslands and rocky slopes. Flowers are basically two-lipped and funneled but that is where the similarities end and the difference of the cultivars come into play. They like moderately fertile, well-drained soil, full sun to light dappled shade. The hairier the cultivar the sharper the soil should be cut with sand, plant in full sun. Protect hardy salvia from excessive winter moisture. Propagation is by division in spring, sow seeds after all danger of frost, or take basal root cuttings in spring and early summer. Prone to rust powdery mildew, stem rot, and fungus are common. Pests include whitefly, aphids, mealy bugs and spider mites.
Saxifraga is a huge genus of about 440 species or cushion forming, evergreen perennial found naturally in the N. hemisphere. They vary greatly in habit and form but generally star shaped or cupped flowers. Depending which cultivar defines the specific cultivation requirements but fertile well-drained soil, full sun to part shade. Best propagation is by division or detach individual rosettes and roots in late spring. Aphids, slugs, and mites may occur.
Sedum contains over 400 species of succulent annuals, evergreen and deciduous, perennials, shrubs and sub shrubs and groundcovers, some of which even crossover to other genuses. Native to the N. hemisphere this species goes way beyond the "common" garden sedum to include succulents like burro's tail and stonecrop. Outdoor varieties need moderately fertile, well-drained soil, full sun. Cut back spreading species after flowering and divide larger species every 3 - 4 years. Sow seeds of hardy species in a cold frame in autumn. Annuals and biennials sow seeds in midspring. Mealy bugs, scale, slugs and snails may be problems.
Solidago commonly called goldenrod contains about 100 species of
woody-based perennials native to
Tradescantia commonly called spiderwort is a genus of about 65 species
of creeping, trailing or tuft-forming, tuberous-rooted, evergreen perennials
native to woodland areas in North, Central and
is a genus of about 24 species of buttercup like perennials naturally found
around moist or wet meadows in
Viola is a genus of about 500 species of annuals and deciduous perennials found in a variety of habitats worldwide. Many are informally referred to as pansies, violas or violets. They like fertile, humus rich, moist, gritty soil, full sun or part shade. After blooming deadhead after flowering cut back. Propagation is from seed in late winter or division. Prone to mosaic viruses, mildews, crown and root rot, rust and mold, snails and slugs and aphids as well.
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