Abstract: A process for preserving green colored plant tissues while retaining the natural green color thereof, in which the tissues are immersed in a relatively inexpensive solution comprising up to about 90% water, at least one monohydric alcohol, at least one preservative component such as sulphurous acid, and sufficient buffering and mordant reagents such as citric acid and cupric salts such as cupric chloride and cupric sulphate, to control the pH and osmolality of the solution and so as to permanently retain the natural green color in the tissues.

Abstract: A relatively inexpensive solution for the single step preservation of fresh naturally colored blooms, comprising (in amounts per liter)600-700 ml tert-butyl alcohol200-250 ml 2-propanol3-30 g thiourea3-30 g citric acid3-30 g sodium citrate50-150 ml propionic acid0-250 ml phenol.

Abstract: A process for preserving green colored plant tissues and in particular coniferous needles, holly and low fiber leaves such as mosses, lichens and ferns in which selected leaves are immersed in a solution comprising (by volume) 35-45% water, 20-30% 2-propanol, 5-12% propionic acid, 5-10% sulphurous acid, 5-10% formalin, 2.5-5% formic acid, 1-5% ethylene glycol, and optionally minor amounts of compounds selected from the group consisting of cupric sulphate, cupric chloride, 20-20-20 fertilizer, citric acid, DBE, magnesium sulphate, acetic acid, cupric acetate, cupric nitrate, sodium phosphate, sodium sulfite, butylated hydroxytolulene and glycerol, for a sufficient time to exchange the naturally occurring water in the tissues with the "chemical water" of the solution and thereby permanently retain and biologically fix the green color of the leaves.

Abstract: A process for preserving green colored plant tissues while retaining the natural green color thereof, in which the tissues are immersed in a solution comprising: water, at least one monohydric alcohol, at least one preservative component selected from the group comprising lower carboxylic acids, di and tri hydric alcohols, and sufficient buffering and mordant reagents to control the pH and osmolality of said solution, so as to permanently retain said green color in said tissues. In a preferred embodiment the treated tissue is subjected to a secondary treatment in a holding solution comprising glycerin and water.

Abstract: A process for preserving substantially any variety of flower while retaining the natural colors thereof, in which the flower is immersed in an essentially water-free composition comprising: at least one dehydrating alcohol, a carboxylic acid, a urea-containing compound, an alkaline citrate, and zero to an effective amount of at least one of a silicone fluid, a silicone resin, an alkaline formaldehyde sulfoxylate, aluminum or magnesium sulphate and cupric or other transitional metal sulphate for sufficient time to dehydrate the flower, said composition also containing a sufficient quantity of at least one compound in the group consisting of an alkaline phosphate, a lower carboxylic acid and phenol so as to ensure that the composition has a pH in the range 5-7. Following immersion the flower is dried and, if desired coated with a silicone resin.

Abstract: A solution and process for preserving Douglas Fir needles while preventing shedding thereof from the branch to which they are naturally attached, producing a natural looking product suitable for display purposes. The branches, with attached needles, are immersed in a solution comprising (in amounts per liter of solution):300-500 ml water200-300 ml ethyl alcohol0-75 ml ethylene glycol50-75 ml propionic acid0-20 ml glycerin100-150 ml formalin50-175 ml propylene glycol40-75 gms citric acid1-7 gms magnesium sulphate15-25 gms cupric sulphate5-10 gms sodium sulphite0-10 gms seaweed extract,for a period of up to about two weeks and subsequently air dried.