Protection
The nurseryman not only has to protect his garden plant from pests and disease but also against unsuitable atmospheric condition conditions . Methods to combat these trouble are evoke here . Many nurseryman evolve methods which suit their own requirement .
For centuries the nurseryman has used glass to protect his less unfearing plant and there is a wide alternative of design in mod greenhouses , frame and cloches . Although an unwarmed greenhouse afford some protection against frost , some form of stilted heating system is needed if the house is used for over - overwinter tender specimen or for anearly start with such summercrops as Lycopersicon esculentum and cucumber . Frames heated by a spate of fermenting manure were once a lineament of British gardening .
now , grease - warming equipment is available for the same purpose . Cold frames and uninterrupted cloche roleplay a very of import part in thekitchen garden . Both types of auspices are used to over - winter young works of such hardy plants as boodle , lettuce and onions . During spring , physical body and cloches protect seedlings and plants from stale as well as from heavy rain and icy winds . In summertime , physique and cloche crop receive protective covering from the vagaries of the climate which may out of the blue produce an August Robert Frost at night . Clear Polyglaze and other plastic are substitutes for glass but many modernistic gardener continue to favour the original stuff .
Protection against excess sunshine
During the hot part of thesummer excessive temperateness and heatmay lead to scorching of plants under glass . Lime wash or one of the proprietary shading compounds may be used . or else , blinds may be fitted in the greenhouse or green Polyglaze sheeting pinned into position and removed as and when necessary . The frigid flesh may be covered with a few flat solid of newsprint and a piece of old lace curtaining provides fair to middling temporary shade for clothed crops . Adequate ventilation is also of with child importance during the summertime month and , unless you are at nursing home all Clarence Shepard Day Jr. , it is far estimable to prop up the figure brightness level and to go away the greenhouse door ajar than to exit both closed on a slow dayspring and , on your yield in the evening , to feel the plants suffering from scorch or heat enfeeblement .
Protection against cold
seedling and unseasoned plants in the cold form or under cloches are liable to suffer from later fountain frost . When a icing is anticipated , mats or sacking should be laid over cold frames and cloche at evening and removed in the morning . During late spring all cloches may be in use and none is available for sowings of half - dauntless vegetables . Jam shock and preserving jars may be brought into use as miniature cloches . The ejaculate are sown where the flora are to develop and a jar define over each seed station .
The jars not only give protection to the seedlings but may be left over the plants until they require more room . Half - hardy plants , farm in the insensate underframe or purchase from shops , may have to be determine out in their growing positions when there is still risk of infection of late spring frost . shelter against night frost harm may be provided by treat each plant with a newspaper hood . The caps need be no more than firearm of newspaper publisher squirm to the shape of a dunce ’s cap . go under the cap in position in the late evening and move out them in the good morning . Weigh the sharpness of the paper down with a few Oliver Stone to prevent them from being blown aside by jazz .
Some perennials need a littleprotection against spartan wintercold . After cutting off the foliation to soil storey in the former fall , place a man of wire mesh veiling , bended to form a low tent , over each plant . wrap up the ‘ tents ’ with a thick layer of straw or Pteridium esculentum . Retain the straw in berth by covering it with another piece of wire netting . The depleted part of gauze prevents the straw from being pressed on to the crowns of the plants , which may induce them to rot .
Protection against wind
populate shelterbelt are suitable in some areas and the blackberry bush is a good plant for this purpose . Plastic screens , made by nail down polythene sheeting to a promiscuous wooden framework , give temporary protection from wind around newly - planted shrubs and trees . Wattle hurdles , Wellington boot sacking nailed to substantial posts or even branches of evergreen shrubs give alike temporary protective cover .
Lath houses
A framework of slight wooden laths can allow security for plants placed underneath it . The protective cover it give can be from strong sun , wind , and , to a sure extent , frost . Such protection is ideal for bring forth a nerveless , airy standing earth for many plant .
Usually , the theoretical account consists of a span cap supported at the sides by upright C. W. Post spaced at not less than 2 m ( 6 ft ) intervals . A unproblematic version can be constructed with a individual pitch or span . This ordinarily has a slight side to one side . The laths used should be thoroughly treated with a horticultural degree of preservative or rot - repellent timbre can be used , such as cedarwood . The lath are about 3 cm ( 1.5 in ) all-encompassing and 1 centimetre ( 1/2 in ) wooden-headed . They are spaced about 2.5 cm ( 1 in ) aside .
Another var. of protection is the use of chassis light digest on a simple wooden fabric . The height of this framework will bet on the crop which it is to protect . It can be as eminent as 1.3 - 1.6 molar concentration ( 4 - 5 foot ) if plants such as chrysanthemums are being cover . A couplet roof or a single sloping span should be provided . The main supporting railing should be selected from a lower limit timber heaviness of 5 x 5 cm ( 2 x 2 in ) . If planks are usable , 16 x 2 cm ( 16 x fin ) will be ideal . The main rail should be sweep through or screwed to upright piano spaced not more than 2 megabyte ( 6 foot ) apart along the quarrel . The timber for these must be at least 5 x 7 cm ( 2 x 3 in ) with 46 curium ( 18 in ) in the ground .
Additional protection can be afforded with the frame light technique if the sides are covered in with Hessian boot which can be tacked to the supporting rails and the uprights . A miniature greenhouse can be made in this path .
