Opposite leaf arrangement
Special terms
Arrangement of leaves in which two leaves arise from a stem node and are positioned opposite each other.
Glossary of terms
A reference section with categories and short explanations.
Orange flowers
Language of flowers - meanings
In the language of flowers: innocence, eternal love, wedding;
Orangery
Landscape terms
A park structure with one or more halls intended for cultivating citrus and other exotic plants. It can serve as a winter garden.
Orchid
Language of flowers - meanings
In the language of flowers: love, refinement, beauty, Chinese symbol of childhood;
Organic constituents
Cactus grower terms
Complex compounds of the substrate's soil fractions formed as a result of the decomposition of organic substances, for which carbon is an essential element.
Organic fertilizers
Special terms
Fertilizers of plant or animal origin, for example horse or cow manure, soil organisms, which are not absorbed by plants immediately.
Organic matter
Cactus grower terms
A component of soil that is of plant or animal origin.
Ornamental flowering plants
Special terms
This is a comparatively small group of plants that are grown solely for their beautiful, showy flowering. Among flowering houseplants there are shrubs, subshrubs, herbaceous plants, and bulbous plants. Among them one can single out specime…
Ornamental foliage plants
Special terms
They provide ornamental interest either through an unusually striking leaf shape (ferns, philodendrons), or through the bright coloration of their leaves in the most unexpected combinations (begonias, marantas, crotons, many acanthaceous p…
Osmosis
Cactus grower terms
(From Greek osmos - pressure, push) - the ensemble of physico-chemical processes leading to thermodynamic equilibrium and the equalization of solution concentrations on both sides of a membrane. It is ensured by the slow transfer of low-mo…
Osmotic gradient
Cactus grower terms
Difference in osmotic pressure across a membrane.
Osmotic pressure
Cactus grower terms
Excess external pressure that must be applied to the solution side to stop osmosis — the influx of solvent into it through the semipermeable membrane separating them.
Outline
Landscape terms
The linear outline of an object, the contour of a tree or shrub; 2) a plan of an area, drawn by hand, indicating the planting locations of plants, the arrangement of structures, roads, etc.
Ovary
Cactus grower terms
The lower, enlarged part of the pistil that contains the ovules.
Ovary
Special terms
Part of the pistil of flowering plants.
Own-root plants
Cactus grower terms
Plants that develop on their own roots and do not require grafting.
Oyaki: (oyaki)
Bonsai terms
The mother tree in air layering.
Palaestra
Landscape terms
A building or area for physical exercises in Ancient Greece.
Palisade
Landscape terms
1) a light wooden trellised hedge. Installed along the edges of rectangular or square boskets; 2) a palisade of logs driven into the ground, used to stabilize slopes.
Palm leaves
Language of flowers - meanings
In the language of flowers, victory and success;
Palmette
Landscape terms
A stylized palm leaf, one of the elements of ornamental design in a garden parterre.
Pamperos
Cactus grower terms
Winds from Argentina and Uruguay, blowing from the extensive grassy plains — the pampas.
Pansies
Language of flowers - meanings
In the language of flowers, merriment, amusement;
Pansy eye
African violet terms
A flower type corresponding to the wild form of Saintpaulia — five-petaled, with the two upper petals smaller than the three lower ones (for example, in Capri Chris).
Paradise
Landscape terms
An ancient Persian garden characterized by an abundance of roses, fountains, and ponds.
Parapet
Landscape terms
A low wall serving as a protective barrier for terraces, embankments, stairways, steep slopes, and roads.
Parasites
Cactus grower terms
In this case, plants that parasitize other plants, i.e., living on the surface of a host and obtaining from it food in the form of ready-made organic substances.
Park
Landscape terms
An extensive (usually more than 10–15 ha) landscaped green area, improved and artistically arranged for outdoor recreation. The term entered the Russian language in the 18th century from England and originally meant a natural grove or a pi…
Parterre
Landscape terms
A decorative composition on a horizontal (sometimes slightly sunken) plane, conceived as an open space that is laid out with a lawn, flowerbed, pond, or sculpture. Parterres are divided into flower, lawn, and lacy types.
Parterre garden
Landscape terms
A garden in the formal style dominated by lawns, flowerbeds, and ponds. Trees and shrubs are usually placed on the periphery of clumps and beds; plants are regularly clipped and shaped into spheres, cubes, squares, etc.
Parviflorus
Bonsai terms
Small-flowered
Parvifolia
Bonsai terms
Small-leaved
Pasteurization
Cactus grower terms
A method of disinfecting biological substances, the essence of which is that conditions favorable for the development of microorganisms are first created and their spores germinate, then the temperature is raised and the active microbes di…
Patens
Bonsai terms
Spreading
Pathogen
Cactus grower terms
An organism capable of causing disease.
Pathogenic flora
Cactus grower terms
A collection of pathogenic microorganisms.
Patio
Landscape terms
An inner courtyard of a residential building; compositionally linked with the interiors of buildings and includes elements such as a fountain, an ornamental pool, stone paving, etc.
Patterned ornamental parterre
Landscape terms
A type of embroidered (lace) parterre that was combined with clipped lawn surfaces; the background was usually crushed tile.
Pectinate prickles
Cactus grower terms
Prickles arranged in the form of a ridge.
Pedicel
Cactus grower terms
A flower stalk bearing a single flower.