Clasping Coneflower (Amplexicaulis) is generally described as
an annual forb/herb.
native to the U.S. (United States)
has its most active growth period in the
spring and summer .
Clasping Coneflower (Amplexicaulis) has
green foliage and
yellow flowers, with
an abuncance of
conspicuous black fruits or seeds.
The greatest bloom is usually observed in the
with fruit and seed production starting in the
summer and continuing until
not retained year to year.
Clasping Coneflower (Amplexicaulis) has a
short life span relative to most other plant species and a
rapid growth rate.
At maturity, the typical
Clasping Coneflower (Amplexicaulis) will reach up to
2 feet high, with a maximum height at 20 years of
Clasping Coneflower (Amplexicaulis) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by
It has a
rapid ability to spread through seed production and the seedlings have
Note that cold stratification is
not required for seed germination and the plant cannot survive exposure to temperatures below
high tolerance to drought and restricted water conditions.
Uses of : Landscaping, Medicinal, Culinary, etc.
This plant is used mainly for landscape beautification. It has potential for use in cultivated, garden situations, in naturalized prairie or meadow plantings, and along roadsides.
Clasping coneflower is an annual herb with elongated, bluish, waxy leaves that generally clasp around the stem at the base. The flower heads are similar to those of black-eyed susans, but they are smaller (mostly 1 to 2 inches in diameter). The yellow outer petals droop as the flowers mature, and the cylindrical black center (receptacle) is elongated up to 2 inches in length.
Required Growing Conditions
It is adapted to many soil types, but clasping coneflower generally prefers a moist site. Natural stands are usually found on bottomland areas with a fairly rich soil and ample moisture. It prefers full sun and will not persist in a shaded location.
Clasping coneflower is distributed throughout the South.
Cultivation and Care
A firm seedbed is required. Clasping coneflower germinates best on a clean tilled site that has been firmed with a roller or finishing harrow before planting. Seed can also be planted into a closely mowed, chemically-killed, or burned sod area with a light disking or harrowing that scratches the soil surface. A layer of plant residue on the soil will interfere with seed germination. Broadcast or shallowly drill 2 to 3 grams per 100 square feet (2 to 3 lb/acre) broadcast or shallowly drilled. Seed should be placed close to the soil surface. Cultipacking after planting will ensure good seed to soil contact. Seed will germinate soon after planting and remain as a small, nondescript plant over the winter months.
General Upkeep and Control
Plant growth and seed production are greatly improved by fertilization. Fertilizer should be applied in the spring prior to flowering. Apply according to soil test recommendations. If test results are not available, a rate of 3.5 to 5.5 oz per 100 square feet (100 to 150 lb/acre) of 13-13-13 is adequate for most plantings. For seed production, increase the fertilizer rate to 9 oz per 100 square feet (250 lb/acre). Stands will reseed prolifically for several years, but will gradually decline without soil disturbance. Every two to three years, the site should be disked to control perennial weeds and promote clasping coneflower germination. If necessary, plants can be mowed in the spring before stem elongation begins. Stands that are not disked should be mowed in late summer, and a late fall mowing in is also recommended.
Source: USDA, NRCS, PLANTS Database, plants.usda.gov.
National Plant Data Center, Baton Rouge, LA 70874-4490 USA