
Whorl/Whorled:
Buds, flowers, leaves or shoots growing from the same (single) node,
usually three or more. These leaves are not alternate nor opposite.


Whorl/Whorled:
Buds, flowers, leaves or shoots growing from the same (single) node,
usually three or more. These leaves are not alternate nor opposite.

Rhizome:
A thickened stem (storage organ, capable of storing food), with roots growing from it, which grows horizontally below or on the soil surface. New growth then emerges from different points of the rhizome. Examples Bearded Irises, Calla Lily and some lawn grasses are rhizome plants.


Fungicide:
A chemical used to
protect against,
inhibit, or kill
plant diseases caused by fungi.


Fungus:
A primitive form of plant life known to houseplant growers as the most
common cause of infectious disease
such as powdery mildew and sooty mold.


Everlasting Flowers:
Flowers that have been grown for drying and preserving. They usually have papery petals that retain some or all of their color once they are dried. Some Everlasting Flowers include Gompherena, strawflower and statice.


Weed:
Any plant (usually unattractive) growing out of place where it’s unwanted or interferes with desirable plants in the landscape. Generally weed seeds spread by winds. But seeds can also spread through domestic and commercial bulk or bags of manure, potting soil etc., and through transplants from neighbor’s yards and nursery plants.


Horticulturist:
Scientists who use a variety of tools to study plants from fruits, vegetables, and flowers to ornamentals. Horticulturists may focus on a variety of issues, from fruit yield to appearance to the ability to endure cold or drought. They are interested in everything from plant genetics to breeding to aesthetics and may work everywhere from greenhouses to gardens to parks.


Damping-off:
Rotting of seedlings and cuttings caused by any of several fungi; a fungal attack near the soil line that cases cuttings or emerged seedlings to fall over and die.


Microclimate:
Climate within a given area that is different from the surrounding vicinity. A variety of conditions influencing microclimates include sun, shade, humidity, wind, drainage, hills, valleys, woodlands, hollows, structures, water proximity, and other factors.


Mulch:
A thick, organic matter (leaves, straw, bark, wood chips, and more) placed over soil to suppress weeds, prevent moisture evaporation, maintain soil temperature, and keep roots from freezing.
Compost:
A blend of decayed, organic material such as manure and vegetation used to fertilize or improve the soil’s structure with rich nutrients.