Herbs & Plants

Solidago rigida

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Botanical Name : Solidago rigida
Family: Asteraceae
Genus: Solidago
Species: S. rigida
Kingdom: Plantae
Order: Asterales

*Aster rigidus (L.) Kuntze 1891 not L. 1753
*Oligoneuron grandiflorum (Raf.) Small
*Oligoneuron rigidum (L.) Small
*Solidago grandiflora Raf.
*Aster jacksonii Kuntze, syn of subsp. glabrata
*Leioligo corymbosa (Elliott) Raf., syn of subsp. glabrata
*Oligoneuron corymbosum (Elliott) Small, syn of subsp. glabrata
*Oligoneuron jacksonii (Kuntze) Small, syn of subsp. glabrata
*Solidago corymbosa Elliott 1823 not Poir. 1817, syn of subsp. glabrata
*Solidago jacksonii (Kuntze) Fernald, syn of subsp. glabrata
*Oligoneuron bombycinum Lunell, syn of subsp. humilis
*Oligoneuron canescens Rydb., syn of subsp. humilis
*Solidago bombycina (Lunell) Friesn., syn of subsp. humilis
*Solidago bombycinum (Lunell) Friesner, syn of subsp. humilis
*Solidago canescens (Rydb.) Friesner, syn of subsp. humilis
*Solidago parvirigida Beaudry, syn of subsp. humilis

Common Names: Stiff Goldenrod, Flat Topped Goldenrod, Stiff Goldenrod

Habitat : Solidago rigida is native to the region between the Atlantic Coast and the Rockies, from Alberta east to Ontario, south as far as New Mexico, Texas, and Georgia. In New England, it grows today only in Connecticut, though there are historical records indicating that it formerly grew in Rhode Island and Massachusetts. It grows on the dry or gravelly open woods, thickets and prairies.

Solidago rigida is a perennial plant, growing to 1.2 m (4ft) at a fast rate.
It is hardy to zone (UK) 4. It is in flower in September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects.It is noted for attracting wildlife.

Flowers: A flat-topped cluster 2 to 5 inches across of 3/8-inch yellow flowers, each with 6 to 13 short petals (ray flowers) and a yellow center with up to 35 disk flowers. The rays are sometimes broad with rounded tips, sometimes more narrow with pointed tips.

Leaves and stem:
There are both basal leaves, and leaves alternating up the stem. All leaves are a grayish green color, generally oval in shape, rough from short bristly hairs, and mostly toothless but may have a few rounded, shallow teeth. The basal leaves are up to 5½ inches long and 1½ inches wide and stand generally erect on long stalks.

The alternating leaves are about 2 inches long, become progressively smaller as they go up the stem, may have wavy edges, are fairly stiff (hence the common name), tend to point upward, and clasp the stem. Stems are stout and rough from short bristly hairs.

Fruits: Fruit is a dry seed with a tuft of white or light brown hairs to carry them off in the wind.

Seed is softly angled, 2 to 2½ millimeters long, sometimes a bit hairy, with faint lines or ridges along its length and ripens from pale tan to brown. Much of the seed is eaten by insects before it ripens.

*Solidago rigida subsp. glabrata (E.L.Braun) S.B.Heard & Semple – southeastern + south-central USA
*Solidago rigida subsp. humilis (Porter) S.B.Heard & Semple – central + western Canada, central + western USA as far west as the Rocky Mountains
*Solidago rigida subsp. rigida – Ontario, central + eastern USA

Landscape Uses:Border. Succeeds in any moderately fertile moisture retentive soil in sun or semi-shade. Grows well in heavy clay soils. A rather greedy plant, it is apt to impoverish the soil. The plant attracts various beneficial insects such as ladybirds, lacewings and hoverflies to the garden, these insects will help to control insect pests in the garden. Special Features: Attractive foliage, North American native, Invasive, Naturalizing, Attracts butterflies, Suitable for cut flowers, Suitable for dried flowers, Attractive flowers or blooms.

Propagation :
Seed – sow spring in a cold frame. Only just cover the seed and do not allow the compost to become dry. Prick out the seedlings into individual pots when they are large enough to handle, and grow them on for their first winter in pots. Plant them out into their permanent positions in spring or early summer. Division in spring or autumn. Larger divisions can be planted out direct into their permanent positions. We have found it best to pot up the smaller divisions and grow them on in a lightly shaded position in a cold frame, planting them out once they are well established in the summer.

Medicinal Uses:
The leaves and blossoms are antiseptic, astringent and styptic. A valuable remedy in the treatment of all kinds of haemorrhages. The flowers have been ground into a lotion and used to treat bee stings. An oil obtained from the plant (is this an essential oil?) is diuretic. The root is cathartic and diuretic. A decoction of the root has been used as an enema. An infusion has been used to restore the flow of urine.

Other Uses::..…Dye; Latex……….A good quality rubber can be made from a latex that is obtained from the leaves[46, 61]. Mustard, orange and brown dyes can be obtained from the whole plant.
Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider.


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