Tel.: +44 (0)1202 873931

Knoll Gardens

COVID 19; JUST TO LET YOU KNOW…

We continue to be very busy with mail order though we are now achieving turnaround times that are closer to our usual time of up to 14 working days.

We are delighted to be able to offer timed slots for customers to visit the nursery and gardens. These slots must be pre booked via the shop page of the website. Orders can also be placed online for collection from the nursery but please do not travel until we have emailed to let you know that the plants are ready to collect.

Calculate the number of plants you need

Here is our list of suggested numbers of plants to be used per square metre. Complete cover of the ground should be created using either the higher or lower suggested planting densities; the higher density, by using more plants, taking less time to achieve cover than the lower density. For specimen style planting,  for example in Gravel gardens, where more space is required around each plant then the density can be reduced still further from that shown below.

GRASSES

Acorus  7 to 9
Anemanthele  1 to 3
Andropogon  3 to 5
Ampeledesmos  1 to 3
Arundo  1 to 3
Bothriochloa  3 to 5
Briza 7 to 9
Calamagrostis 1 to 5
Carex (smaller forms such as C.flacca) 7 to 11
Carex (medium forms such as C.Evergold) 3 to 7
Carex (larger forms such as C.secta) 1 to 3
Chasmanthium 3 to 5
Cortaderia 1 to 3
Cyperus 1 to 5
Deschampsia 5 to 7
Elymus 3 to 5
Eragrostis 3 to 5
Eriophorum 5 to 7
Festuca (small to medium forms) 5 to 9
Festuca (larger forms such as F.mairei) 1 to 5
Hakonechloa 5 to 7
Helictotrichon 3 to 5
Hordeum 7 to 9
Hystrix 3 to 5
Imperata 7 to 11
Jarava 3 to 5
Juncus 3 to 7
Leymus 3 to 5
Liriope 5 to 9
Luzula 5 to 7
Milium 5 to 7
Miscanthus (most forms) 1 to 3
Miscanthus (smaller forms such as M.purpurescens) 3 to 5
Molinia (M.caerulea & forms) 3 to 5
Molinia (M.arundinacea & forms) 3 to 5
Muhlenbergia 1 to 5
Nassella 5 to 9
Ophiopogon 5 to 11
Panicum 3 to 5
Paspalum 1 to 3
Pennisetum 3 to 5
Phalaris 3 to 5
Phragmites 3 to 5
Pleioblastus 1 to 3
Poa 3 to 5
Schizachyrium 5 to 7
Sorghastrum 5 to 7
Sporobulus 5 to 9
Spodiopogon 3 to 5
Stipa (larger forms such as S.gigantea) 1 to 3
Stipa (smaller forms see Nassella) 5 to 9
Typha 3 to 5
Uncinia 5 to 9

PERENNIALS

Achillea 3 to 5
Agapanthus 3 to 5
Agastache 3 to 5
Anemone 3 to 5
Angelica 1 to 3
Anthemis 3 to 5
Arctanthemum 5 to 7
Artemisia 3 to 5
Asphodeline 3 to 5
Aster 3 to 5
Astilbe (smaller forms such as A.Pumila) 5 to 7
Astilbe (most forms) 3 to 5
Astrantia 5 to 7
Bergenia 5 to 7
Beschorneria 1 to 3
Bidens 1 to 5
Centranthus 3 to 7
Cephalaria 1 to 3
Ceratostigma 5 to 7
Cirsium 3 to 5
Crocosmia 3 to 7
Dianthus 5 to 7
Dierama 3 to 5
Echinacea 5 to 7
Echinops 3 to 5
Erigeron 5 to 7
Eryngium 3 to 5
Eucomis 3 to 5
Eupatorium (most large forms) 1 to 5
Eupatorium (smaller forms such as E. Chocolate) 3 to 5
Eupatorium 3 to 5
Euphorbia 3 to 5
Fascicularia 3 to 5
Filipendula 1 to 3
Foeniculum 3 to 5
Francoa 5 to 7
Gaura 3 to 5
Geranium 5 to 7
Geranium 3 to 5
Geranium 3 to 5
Geum 5 to 7
Helianthus 1 to 3
Helenium 5 to 7
Heuchera 5 to 7
Inula 1 to 3
Iris 3 to 5
Knautia 5 to 7
Kniphofia 5 to 7
Leucanthemum 3 to 5
Liatris 3 to 5
Libertia 3 to 9
Ligularia 3 to 5
Lysimachia 3 to 5
Lythrum 3 to 5
Macleaya 1 to 3
Nepeta 3 to 5
Papaver 5 to 7
Patrinia 3 to 5
Persicaria 3 to 5
Persicaria (most forms) 5 to 7
Persicaria (P.polymorpha) 1 to 3
Phlomis 3 to 5
Potentilla 5 to 7
Rudbeckia (most forms) 3 to 5
Rudbeckia (large forms such as R.laciniata) 1 to 3
Salvia 5 to 7
Sanguisorba (smaller forms such as S.Tanna) 5 to 7
Sanguisorba (most forms) 3 to 5
Scabiosa 5 to 7
Schizostylis 5 to 7
Sedum 3 to 5
Serratula 5 to 7
Sisyrinchium 7 to 9
Stachys 5 to 7
Symphytum 3 to 5
Thalictrum 1 to 5
Tradescantia 5 to 7
Verbena 3 to 5
Veronicastrum 3 to 5