Herbaceous Perennials (Plants) Summary

Herbaceous Plants - Description of Terms - Summary Information - Approved Lists

HERBACEOUS PERENNIALS (PLANTS): Summary of Specification Criteria

This table gives information typically used in the specification of herbaceous plants. It is important to realise that plants are variable and growth varies between species and seasons. For this reason the details within the table give general, accepted dimensions and terms for the specification of herbaceous plants but there are always well grown and healthy plants which are exceptions.

A knowledge of the product and the methods of its production are important in specifying plants.

Values shown in bold type indicate the more typical for the range.

HP.A2

HP.A3

HP.A4

HP.A5

HP.A6

ROOT PROTECTION

CONTAINER SIZE

MINIMUM SPREAD

NUMBER OF BUDS

METHOD OF PROPAGATION

NOTES

CL = clump
C = container

Min. size or range given in LITRES unless otherwise indicated

cm

CL

2, 3 or 4

Seed or Vegetative method

Low spreading/medium spp./cvs.
e.g. Acaena spp., Armeria spp., Ajuga spp., Epimedium spp., Festuca spp., Galium spp., Saxifraga spp., Stachys spp.,

CL

2, 3 or 4

Seed or Vegetative method

Medium/vigorous spp./cvs.
e.g.: Alchemilla mollis, Begenia spp., Brunnera macrophylla, Geranium macrorrhizum, Hosta spp., Phalaris arundinacea 'Picta'

C

0.5(P9), 1(P11), 1.5(P13), 2, 3, 4, 5

8-10,

2, 3 or 4

Seed or Vegetative method

Low spreading/medium spp./cvs.
e.g. Acaena spp., Armeria spp., Ajuga spp., Epimedium spp., Festuca spp., Galium spp., Saxifraga spp., Stachys spp.,

C

0.5(P9), 1(P11), 1.5(P13), 2, 3, 4, 5

10-15, 15-20, 20-30

2, 3 or 4

Seed or Vegetative method

Medium/vigorous spp./cvs.
e.g.: Alchemilla mollis, Begenia spp., Brunnera macrophylla, Geranium macrorrhizum, Hosta spp., Phalaris arundinacea 'Picta'

NOTE: MINIMUM SPREAD, which primarily applies to evergreen perennials, is included in this Summary for indicative purposes but is not included in Section 2.

HP.A2	HP.A3	HP.A4	HP.A5	HP.A6
ROOT PROTECTION	CONTAINER SIZE	MINIMUM SPREAD	NUMBER OF BUDS	METHOD OF PROPAGATION	NOTES
CL = clump C = container	Min. size or range given in LITRES unless otherwise indicated	cm
CL			2, 3 or 4	Seed or Vegetative method	Low spreading/medium spp./cvs. e.g. Acaena spp., Armeria spp., Ajuga spp., Epimedium spp., Festuca spp., Galium spp., Saxifraga spp., Stachys spp.,
CL			2, 3 or 4	Seed or Vegetative method	Medium/vigorous spp./cvs. e.g.: Alchemilla mollis, Begenia spp., Brunnera macrophylla, Geranium macrorrhizum, Hosta spp., Phalaris arundinacea 'Picta'
C	0.5(P9), 1(P11), 1.5(P13), 2, 3, 4, 5	8-10,	2, 3 or 4	Seed or Vegetative method	Low spreading/medium spp./cvs. e.g. Acaena spp., Armeria spp., Ajuga spp., Epimedium spp., Festuca spp., Galium spp., Saxifraga spp., Stachys spp.,
C	0.5(P9), 1(P11), 1.5(P13), 2, 3, 4, 5	10-15, 15-20, 20-30	2, 3 or 4	Seed or Vegetative method	Medium/vigorous spp./cvs. e.g.: Alchemilla mollis, Begenia spp., Brunnera macrophylla, Geranium macrorrhizum, Hosta spp., Phalaris arundinacea 'Picta'