This can be achieved by strapping the pile together in a press, i.e.
#Plants give preferential treatment free#
Specimens are best pressed with moderate pressure, preferably in an arrangement that will permit as free a circulation of air as possible. When using foam sheets it is advisable to circulate warm air around the press or change the drying papers more frequently. Care must be taken to ensure 'damp spots' do not develop in the press. If foam sheets are not available, several thicknesses of folded newspaper may be used.
where flowers are borne on thick twigs or arise from a thick bulbous base, sheets of spongy plastic foam (polyurethane or similar) about 1 cm thick, placed between the newspaper folders, help to distribute pressure evenly across the specimen. When plants are uneven in thickness, e.g. plywood) may be used to absorb moisture from succulent specimens. If such cardboard is not available, additional sheets of newspaper or wooden board (e.g. These are particularly necessary when using a forced circulation of warm air. Sheets of thick, preferably smooth-sided, centre-corrugated cardboard (such as used in cardboard carton sides), placed between the drying folders will assist air circulation through the press. Care is necessary to ensure that the maximum amount of useful information is preserved. Large and/or succulent fruit is often best preserved by cutting both longitudinal and transectional (from different fruit) sections from them and drying these. Telopea) are best cut in half lengthways before pressing. The flowers should be spread out with the petals carefully arranged, wilted leaves should be straightened and unnecessary shoots of excessively twiggy shrubs may be cut away. The plant should be carefully laid out between the drying sheets, as their form at this stage largely determines their ultimate appearance. Papers with a glossy surface should be avoided because they are not absorbent enough to aid drying.
Specimens are pressed flat and dried between sheets of absorbent blotters or semi-absorbent paper such as newspaper. Flowers with a lot of nectar may go mouldy very quickly if excess nectar is not shaken off before pressing. However, some plants show such rapid wilting, particularly of the flowers, that such delays are best avoided. Most plants may be kept in sealed containers such as plastic bags for up to a day if it is inconvenient to press immediately. The best specimens are plants that are pressed as soon as possible after collection, before wilting and shrivelling. There are minor variations in recommended methods, but they are essentially the same worldwide. Techniques for pressing and drying specimens have been established for many years.
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