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Botanical Name : Crataegus calpodendron
Synonyms: Crataegus tomentosa. DuRoi.
Common Names: Pear Hawthorn, Late hawthorn
Habitat : Crataegus calpodendron is native to Eastern N. America – Ontario to central USA..It grows in open woods and thickets, especially by small rocky streams.
Crataegus calpodendron is a deciduous shrub or small tree to 6 m (18 ft) tall. Crown broad, but irregular and open. Bark gray and thickly furrowed. Twigs reddish brown when young, graying with age, densely hairy, becoming glabrous. Spines about 4 cm (1.6 in) long. Leaves alternate, simple, elliptic to ovate, 5-11 cm (2-4.4 in) long, 2.5 – 7.5 cm (1-3 in) wide, often with 3-5 pairs of irregular lobes near the base, pubescent beneath, dull yellow-green with sunken veins above. Petioles stout, occasionally winged and with small glands.
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It is not frost tender. It is in flower in June, and the seeds ripen in October. Flowers in corymbs, villose to tomentose, numerous, 1-1.6 cm (0.4-0.6 in) long; calyx tube pubescent, glandular-serrate or pectinate; petals 5, white; calyx 5 lobes; stamens 20, anthers white or rarely pink; flowers appear May to June. Fruits pomes, 0.8 cm (0.3 in), pear-shaped to globose, orange red; nutlets 2-3, pitted on the surface, matures in late summer.
The flowers are hermaphrodite (have both male and female organs) and are pollinated by Midges.Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay soil. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very alkaline soils.
It can grow in semi-shade (light woodland) or no shade. It prefers moist or wet soil and can tolerate drought. The plant can tolerates strong winds but not maritime exposure. It can tolerate atmospheric pollution.
A very easily grown plant, it prefers a well-drained moisture retentive loamy soil but is not at all fussy. Once established, it succeeds in excessively moist soils and also tolerates drought. It grows well on a chalk soil. A position in full sun is best when plants are being grown for their fruit, they also succeed in semi-shade though fruit yields and quality will be lower in such a position. Most members of this genus succeed in exposed positions, they also tolerate atmospheric pollution. Seedling trees take from 5 – 8 years before they start bearing fruit, though grafted trees will often flower heavily in their third year. The flowers have a foetid smell somewhat like decaying fish. This attracts midges which are the main means of fertilization. When freshly open, the flowers have more pleasant scent with balsamic undertones. Hybridizes freely with other members of this genus. Seedlings should not be left in a seedbed for more than 2 years without being transplanted. A very ornamental plant.
Seed – this is best sown as soon as it is ripe in the autumn in a cold frame, some of the seed will germinate in the spring, though most will probably take another year. Stored seed can be very slow and erratic to germinate, it should be warm stratified for 3 months at 15°c and then cold stratified for another 3 months at 4°c. It may still take another 18 months to germinate. Scarifying the seed before stratifying it might reduce this time. Fermenting the seed for a few days in its own pulp may also speed up the germination process. Another possibility is to harvest the seed ‘green’ (as soon as the embryo has fully developed but before the seedcoat hardens) and sow it immediately in a cold frame. If timed well, it can germinate in the spring. If you are only growing small quantities of plants, it is best to pot up the seedlings as soon as they are large enough to handle and grow them on in individual pots for their first year, planting them out in late spring into nursery beds or their final positions. When growing larger quantities, it might be best to sow them directly outdoors in a seedbed, but with protection from mice and other seed-eating creatures. Grow them on in the seedbed until large enough to plant out, but undercut the roots if they are to be left undisturbed for more than two years.
Fruit – raw or cooked. Sweet and succulent. The fruit can be used in making pies, preserves, etc, and can also be dried for later use. The fruit is about 10mm in diameter. There are up to five fairly large seeds in the centre of the fruit, these often stick together and so the effect is of eating a cherry-like fruit with a single seed.
Cardiotonic; Hypotensive; Stimulant.
An infusion of the root bark has been used as a stimulant to treat cases of general debility. An infusion of the twigs has been used to treat pains in the side and bladder problems. Although no other specific mention has been seen for this species, the fruits and flowers of many hawthorns are well-known in herbal folk medicine as a heart tonic and modern research has borne out this use. The fruits and flowers have a hypotensive effect as well as acting as a direct and mild heart tonic. They are especially indicated in the treatment of weak heart combined with high blood pressure. Prolonged use is necessary for it to be efficacious. It is normally used either as a tea or a tincture.
Other Uses :
Wood – heavy, hard, tough, close-grained. Useful for making tool handles, mallets and other small items
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.