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HOLLYHOCK

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Originally appearing in Volume V13, Page 616 of the 1911 Encyclopedia Britannica.
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HOLLYHOCK (from M.E. holi—doubtless because brought from the See also:

Holy See also:Land, where it is indigenous (Wedg.)—and A.-S. 3 (rl (2.4 Ilex Aquifolium. Shoot bearing leaves and See also:fruit about '-z nat. See also:size. hoc, a See also:mallow), See also:Althaea rosea, a perennial plant of the natural See also:order See also:Malvaceae, a native of the See also:East, which has been cultivated in See also:Great See also:Britain for about three centuries. The See also:ordinary hollyhock is single-blossomed, but the florists' varieties have all See also:double See also:flowers, of See also:white, yellow, See also:rose, See also:purple, See also:violet and other tints, some being almost See also:black. The plant is in its See also:prime about See also:August, but by careful management examples may be obtained in blossom from See also:July to as See also:late as See also:November. See also:Holly-hocks are propagated from See also:seed, or by See also:division of the See also:root, or by planting out in See also:rich sandy See also:soil, in a See also:close See also:frame, with a See also:gentle bottom See also:heat, single eyes from woodshoots, or cuttings from outgrowths of the old stock or of the lateral offsets of the spike. The seed may be sown in See also:October under See also:cover, the See also:plants obtained being potted in November, and kept under See also:glass till the following See also:April, or, if it be late-gathered, in May or See also:June, in the open ground, whence, if required, the plants are best removed in October or April. In many gardens, when the plants are not disturbed, self-sown seedlings come up in abundance about April and May. Seedlings may also be raised in See also:February or See also:March, by the aid of a gentle heat, in a See also:light and rich moist soil; they should not be watered till they have made their second leaves, and when large enough for handling should be pricked off in a See also:cold frame; they are subsequently transferred to the See also:flower-See also:bed. Hollyhocks thrive best in a well-trenched and manured sandy See also:loam. The spikes as they grow must be staked; and See also:water and, for the finest blossoms, liquid manure should be liberally supplied to the roots.

Plants for See also:

exhibition require the See also:side growths to be pinched out; and it is recommended, in cold, See also:bleak or northerly localities, when the flowering is over, and the stalks have been cut off 4 to 6 in. above the soil, to See also:earth up the crowns with See also:sand. Some of the finest double-flowered kinds of hollyhock do not See also:bloom well in See also:Scotland. The plant is susceptible of great modification under cultivation. The forms now grown are due to the careful selection and See also:crossing of varieties. It is found that the most diverse varieties may be raised with certainty from plants growing near together. The See also:young shoots of the hollyhock are very liable to the attacks of slugs, and to a disease occasioned by a fungus, Puccinia malvacearum, which is a native of See also:Chile, attained notoriety in the Australian colonies, and finally, reaching See also:Europe in 1869, threatened the extermination of the hollyhock, the soft parts of the leaves of which it destroys, leaving the venation only remaining. It has been found especially hurtful to the plant in dry seasons. It is also parasitic on the See also:wild mallows. The disease appears on the leaves as See also:minute hard See also:pale-See also:brown pustules, filled with spores which germinate without a resting-See also:period, but when produced late in the See also:season may last as resting-spores until next See also:spring. Spraying See also:early in the season with See also:Bordeaux mixture is an effective preventive, but the best means of treatment is to destroy all leaves as soon as they show signs of being attacked, and to prevent the growth of other See also:host-plants such as mallows, in the neighbourhood. In hot dry seasons, red-spider injures the foliage very much, but may be kept at See also:bay by syringing the plants frequently with plenty of clean water.

End of Article: HOLLYHOCK

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HOLMAN, JAMES (1786–1857)