Archive for April, 2008
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An annual or biennial herb (Coriandrun sativum), of the Parsley Family, grown for it’s aromatic seeds which are used for flavoring liquors and confections. This pungent herb is native of southern Europe and is commonly known as Coriander, Cilantro, or Chinese Parsley. Its name is said to be derived from koris, Greek for “bedbug” since the plant smelled strongly of the insect. The leaves are most commonly referred to as cilantro and have a much different taste from the seeds, one that is similar to parsley with a dash of citrus flavor.
Cilantro is the most difficult herb to grow because it is so short lived and it needs cool temperatures to grow well. Many people think that they kill Cilantro because it doesn’t last very long when they purchase plants at their local nursery. Cilantro will bolt (send up a flower stalk) as soon as the roots get above 75 degrees or so. Cilantro needs to be grown in early spring or fall when the weather is cool. It requires mostly sunshine but can be grown in morning sun and shade in the hot afternoon. Growing it in the ground with mulch on top of the roots helps keep the soil cooler longer (Add a bit of mulch or compost to your cilantro bed to provide nutrients for the soil and an extra layer of protection for the roots).
Cilantro grows best in full sun. Plant the seed 1/4 to 1/2 inch deep every 1 inch in rows 12 inches apart. Keep moist until seeds germinate, which should take about 7 to 10 days. No thinning is required. Some growers will seed cilantro thicker than this (30 – 40 seeds/foot). Deep, fertile, light or heavy, but well-draining. Water on a regular schedule, do not overwater. The denser plant population competes more effectively with weeds in the row. In addition, the thicker planting makes harvesting easier since plants are bunched in the field. Cilantro can be started in the greenhouse and transplanted into the field. Cilantro grows best under cool conditions while hot weather encourages it to flower. Cilantro will withstand temperatures as low as 10 degrees, which makes it an excellent fall crop.
Cilantro is ready to be harvested as soon as the plant is 4 – 6 inches tall, which can take 40 to 60 days after planting. If the older, outside leaves are harvested, the plant will continue to produce new foliage until it goes to seed. The plant can
regrow for a second cutting; however, it does not regrow as efficiently as parsley. For that reason many growers just harvest it once. Cilantro can also be harvested by pulling out the whole plant.
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Echinacea, or purple coneflower, are great for perennial borders and bloom in early to late summer with large, showy flowers. This plant is a native of N. America growing from Virginia to Ohio, Michigan, south to Georgia and Louisiana. It is found growing in open fields, dry open woods and prairies. The daisy like flowers are pink or pink-purple or white with one species that is yellow in color. The prominent cone-shaped center of each daisy-like flower gave the plant its common name. Echinacea blooms all summer long and into the beginning of fall as well. There are 2 popular species in the US:
E. purpurea: Easy to grow. Can sow them directly or starts in pots indoors. When the seedlings form, these can be moved and planted 18inch apart so that they have space to grow.
E. angustifolia: More difficult to grow. Start these indoors so as not to waste seed. It is the more rare and expensive variety.
Echinacea is easy to grow from seed! Simply sow the seeds when the soil reaches 55-70 degrees Fahrenheit in the spring. Sow on the surface of the soil and after the seeds begin to germinate lightly cover the seeds with about 1/8 of an inch of soil. Thin the plants out so that they are 18 to 24 inches apart. Germination should occur within 10-20 days. After germination the plants will grow very quickly.
Echinacea prefers light, loamy, well-drained soil and a sunny position, but it will tolerate dappled shade. It does well in average or poor soil and Echinacea has a thick tap-root that grows deep to allow for water conservation once established. It is important to mix a good quantity of compost with the soil from the hole before planting and to keep the plant well watered until established. After that, an annual spring mulch is all they need.
The long lasting flowers with their slightly backward pointing flower petals when fully open, bloom from July through to end of September are good subjects for the flower border. Echinacea is very hardy and versatile growing well in zones 3-8. Some varieties specified below do well even in the humid summers of zones 9 and 10.
Most plants in the Echinacea family grow about 2-4′ tall and about 2′ wide. Echinacea is one of the top selling herbs in the US for its immune enhancing properties. Research has shown that taking Echinacea at the first sign of a cold or flu can decrease the duration and intensity of the symptoms.
Autumn is the best time to harvest Echinacea roots, – harvest after the first frost. Expect roots to range from 8 in. (20cm) to a possible 24 in. (30cm). The moisture content is normally lower than it is in spring. Plants are required to grow for three to four years before they are ready to be harvested. Once roots have been harvested they should be cleaned and dried. Two possible methods for drying the roots are, under low forced heat, or dried in open air in the sun.
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Perennial crocosmias range from the bright canary yellows to the flashy tomato reds. Plant them bursting out of a group of quieter colours or in a subtropical border packed with hothouse colours. Although Crocosmia are half hardy bulbs they are usually grown as annuals by gardeners. they have leaves that look like swords, these carry inflorescences that have red or orange funnel like flowers. Crocosmia comes into bloom in the summer months. Common names for Crocosmia include Montbretia and copper top. They make ideal border plants.
The name ‘Crocosmia’ originats from a combination – crocosmia from the Greek krokos, meaning saffron, and osme meaning smell, alluding to the saffron scent given off by the dried flowers when placed in water. The alternate name ‘Montbretia’ got its name from Antoine François Ernest Conquebert de Monbret who was the botanist that accompanied Napoleon on his Egypt campaign in 1798.
The foliage reaches about 3 feet in height. The flowers, borne on stems up to 2 feet long, bloom for a long time. Typically, the flower stems branch and curve slightly, bearing two rows of buds. You can tell they are related to the gladiola.
It is perhaps easiest to grow Crocosmia from corms; If you go with corms, set them in the ground 2 to 3 inches deep and 8 to 10 inches apart. The corms are best planted in the fall for blooms the following spring.
If growing from seeds then they should be sown in the spring, just cover the seeds with topsoil. Plants seeds in seed trays, about 1/4″ deep, in seed starting soil.
They grow best in full sun. Plant in in rich, loose garden soil. If the soil is heavy or doesn’t drain well, mix in a generous amount of sand. Plant corms four to five inches deep, and four inches apart. Water if the soil is dry; and avoid keeping the soil wet, keeping it moist is a better bet. Once established, crocosmias require only the minimum of care, but in cold areas it’s worth covering plants with a deep mulch of well-rotted compost or straw in winter. If the plants are being planted into containers, put them in big pots with big drainage holes, and keep them well-watered. However, if the soil is water-logged, the roots will rot.
Plants that aren’t flowering freely can be divided in the spring. Split them into small clusters and replant in soil enriched with compost, and give a sprinkling of general fertiliser.
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Coreopsis is a member of the Aster family. This plant is also called “Tickseed” or “Calliopsis”. Most varieties are perennials, with some annual varieties. They are natives of plains in the U.S. Coreopsis are sunny flower border work horses. They are great additions to any garden design, blooming most of the summer. Coreopsis make great garden edging as well as nice cut flowers. Coreopsis produces daisy like flowers. Flowers grow on sturdy stalks that grow from 1 1/2′ to 4′ tall. Brilliant colors include yellow, gold, red, maroon, or a combination of these colors.
The annual Coreopsis is C. tinctoria and in a full sun garden it can reach three to four feet in height. Easily grown as a hardy annual (you can sow it outside) this showy yellow and dark red daisy puts on quite a flower display. The drought-tolerant nature of the Coreopsis makes it a great plant for container gardens, xeriscaping or near the road or mailbox where it won’t get watered everyday. Give it a prime spot in the cut flower garden as well.
Zone: Tickseed, or Coreopsis, is hardy in zones 3-8.
Exposure: Full sun Bloom Period/Days to Harvest
Bloom Period/Days to Harvest: Early summer through Fall
Growing from transplantation: Shop for coreopsis plants in the spring in cold regions or year-round in mild climates. Choose healthy-looking plants with signs of new growth in leaf or flower bud. (In early spring you may need to look closely in the pot for the dark stems emerging from the soil.)
Grow Coreopsis from seed: Directly seed them into your flower garden in early spring. Sow seeds early in the season, covering lightly with coarse or sandy soil.
They grow well in average soils. Soil should be well draining. Mix in plenty of compost prior to the first planting. Keep the soil moist until they germinate, about one of two weeks. This versatile plant grows in dry or wet climates. Water only during extended droughts. Plant coreopsis in full sun in well-drained soil. Add a little organic fertilizer to the planting hole. Water weekly throughout the first summer.
Coreopsis will bloom longer if deadheaded. However the profusion of delicate blooms can make deadheading a nightmare. An easier solution is to simply wait until the first flush of bloom wanes and sheer the entire plant back. It will recover quickly. Add a light application of organic fertilizer in spring. Water infrequently once the plant is established – just two or three times during the summer. Dig up your Coreopsis clumps every three years or so to divide in the fall after blooming or in the early spring. The taller varieties will benefit from staking.
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