Bulbs, Corms, Tubers
Bulbs, Corms, Tubers - Description of Terms - Summary Information - Approved Lists
Herbaceous plants are defined as ‘‘non-woody plants which usually die back to ground level and grow again from the rootstock each year’’
This group includes:
non-woody, evergreen perennials which retain some leafy presence above ground during the winter months; e.g. Helleborus spp., Euphorbia spp., Bergenia spp.
Grasses and grass like plants, e.g. Stipa spp., Festuca spp., Galanthus spp.
Some sub-shrubs (defined as ‘‘shrub-like plants, but with the woody parts confined to the lower proportion of the plant’’), e.g. Helianthemum spp., Thymus spp.
All these plants are non-woody and include what might be more colloquially defined as: herbaceous plants, ferns, grasses, sedges, marginals, aquatics, bulbs, corms, rhizomatous and tuberous plants, herbs and non-woody vigorous alpine plants.
These plants are sold in two forms: as PLANTS and as PERENNATING/STORAGE
ORGANS, e.g. BULBS, CORMS, TUBERS.
The following information gives details of the specification of dry bulbs, corms and tubers sold in the dormant season and planted directly. Some bulbous plants (Crocosmia spp., Dierama spp., Arum spp.) are usually supplied as PLANTS (see Section HP.A). Other bulbous plants (e.g. Cyclamen spp., Galanthus spp.) may be sold as dry bulbs or corms but establish better if planted ‘in the green’ or as pot grown plants. All bulbs can be grown under contract in pots and supplied as growing plants, if so specified.
Herbaceous perennials sold as bulbs, corms or tubers are specified by qualification of the following criteria:
Each of these categories will be described, giving definitions and explanations, as appropriate: