AirA method of propagating a single stemmed plant which has lost its lower .
Areole A hairy, cushion-like area found at the base of the spines on.
Bleeding When sap is lost from a plant after it has been cut.
Bract A modified, often brightly colouredwhich grows near the calyx of a flower.
Bulb An underground bud from whichand grow.
Cactus Succulent plant with a thick, fleshy. Usually has spines and brightly coloured , but no leaves.
Calyx A ring of leaves around a bud or flower.
Capillary action Natural tendency for water to be drawn upwards.
Coloured leaf Leaf with colours other than green, white or cream. See variegated.
Compost A mixture of peat or loam with other ingredients which supports plantin a pot.
Crown Upper part ofoften projecting from the surface of soil.
Cutting A leaf or awhich is used to a plant.
Dormant Period when plant naturally stops growing, usually in winter. Leaves may fall and top growth dies down.
Exotic An unusual and/or striking plant or flower.
Fi Hybrid Product of two pure bred plants, but itself produces no. Fertilizer Chemical sub-stances used to stimulate and sustain plant growth. Flower spike Stem on which flowers grow.
Foliar Relating to leaves as in foliarwhich is absorbed through the leaves of a plant.
Forcing Making plants flower earlier than would occur naturally.
Frond The leaf of a palm or
Fungicide Chemical used to
kill diseases caused by
Germination When bulbs orstart to grow. Growing point The tip of a stem from which upward growth occurs. Growing season Period when plants start to grow again, usually from March to October.
Honeydew A sweet, clear
nectar produced by some
Humidity Moisture in
Hybrid Plant produced by
two parents of different
which measures the amount
of water in the air.
Inorganic Term often applied to fertilizer or other chemicals to mean a substance derived from a source which has never been alive. e.g. minerals.
LateralBranches growing out sideways from main stem.
Leaf node The point where leaf joins stem. Loam Soil which contains clay, sand and rotted vegetable matter.
Micro-climate Climate produced by plants growing close together. Misting Very fine water spray. Mutated Branched.
Offshoots Small plants produced by mother plant. Organic Term often applied to fertilizer or other chemicals to mean a substance derived from a source which has been alive, e.g. rotted vegetable matter Osmosis The tendency of water to pass through a fine membrane.
Peat Partly decomposed
vegetable matter used in
composts as it retains
A chemical used
to kill pests.
Pinch out To remove the
growing point of a stem to
encourage the plant to
become bushy or to flower.
Plantlet A small plant.
Plunging Watering a plant
by placing it up to its rim in
Pot-bound When a pot is too small to allow a plant’sto grow.
Resting period Time when plant growth stops, but leaves do not fall. See dormant.
Rosette Collection of leaves shaped like a rose. Rootball Collection of fine roots around main central root.
Sap Vital liquid circulating in plants.
Secondary leaves Leaves which appear on aafter the first set of leaves.
Sharp sand An ingredient of; feels coarse to the touch.
Shrub Woody plant (smaller than a tree) with branches that divide near the ground and no central stem. Spadix Spike carrying both male and female flowers. Specimen plant A single large plant which provides a focal point for a room.
Sphagnum moss A water-retaining moss which grows easily. Used for hanging baskets and for.
Spore A tiny cell-like seed from which plants like ferns grow.
Succulent A plant with thick, fleshy leaves and stem which store water. Systemic A fertilizer orabsorbed into a plant through the leaves or roots.
Top dressing Covering the top of a potted plant’s soil with fresh compost.
Variegated Leaf which is green with white, cream or yellow blotches, or edges on it.
Ventilate Expose to the air.