Ferns add that special magic to many situations. They can give a garden a lush cool feeling with their majestic arching fronds. They can soften the hard lines of buildings and tone down the harsh colours of modern architecture.
Ferns can be planted in large groups to give a woodland effect to a landscaped area, this more natural easy flowing design with more emphasis put on foliage texture as the colour.
In the understorey, plantings of ferns as a groundcover is where they often come into their own. Ferns soon create a dense cover giving a pleasing lushness to any setting. With many established gardens the areas under trees often present a difficult planting problem. With the addition of organic matter and a bit of lower branch pruning a whole new micro-climate can be opened up. Ferns can revel in these protected cool microclimates.
Ferns are foliage plants with a myriad of textures and forms to choose from. Their lush greens are often high-lighted by combining them with other suitable plants, such as Arthropodium spp, Libertia spp , Dianella nigra, Chatham Island forget me nots and many others.
A fern in a container can provide an interesting focal point such as giving that shady back door an interesting feature. Many ferns will do well in containers.
So What do Ferns Like?
- A good supply of moisture
- Generally a shady site. The main thing is to cut out mid day sun. Ferns can handle a lot more sun than is generally believed. Many species like early morning and late afternoon and late afternoon sun, providing moisture is available.
- Shelter from wind.
- Soil that is both rich in humus and well drained (this is to aid the flow of air to the roots). The addition of any of the following would benefit the soil structure:
- Rotted Sawdust
- Rotted Straw
- Compost
- Peat
- An annual dressing of blood and bone is about all the fertilizer necessary. Keep soil covered with a mulch, this will keep the roots cool and the moisture in.
What ferns like? | ||||||||||
Ferns are adaptable and once established can be very hardy. Like any other group of plants, it is important to put the right plant in the right place, this chart is intended as a helpful guide. | ||||||||||
size | sun | shade | dry | average | moist | wind | frost | |||
Botanical name | Common name | |||||||||
Adiantum aepothicum | Maidenhair | 20-30cm | X | a | a | a | a | X | H | |
Asplenium bulbiferum | Hen & Chicken | 50-120cm | X | a | X | a | X | X | H | |
Asplenium bulbxflaccidum | Hanging Hen and Chicken | 40-60cm | a | a | a | a | a | X | H | |
Asplenium flaccidum | ground flaccidum | 20-90cm | X | a | a | a | X | a | H | |
Asplenium lyalli | lyalls spleenwort | 50-70cm | a | a | a | a | a | a | E | |
Asplenium trichomanes | maidenhair spleenwort | 20-40cm | a | a | a | a | X | a | H | |
Asplenium oblongifolium | shining spleenwort | 30-120cm | a | a | a | a | a | a | E | |
A. oblongifolium x bulbiferum | Maori princess | 80-100cm | X | a | a | a | a | X | H | |
Blechnum discolour | crown fern | 50-100cm | X | a | a | a | X | X | H | |
Blechnum fluvatile | kiwakiwa | 20-50cm | X | a | X | a | a | X | H | |
Blechnum minus | swamp kiokio | 30-70cm | a | a | X | a | a | a | H | |
Blechnum montanum | mountain kiokio | 50-80cm | a | a | a | a | a | a | H | |
Blechnum novae zealandiae | kiokio | 30-120cm | a | a | X | a | a | a | H | |
Blechnum penna marina | little hardfern | 5-30cm | a | a | a | a | a | a | H | |
Blechnum procerum | small kiokio | 40-60cm | a | a | X | a | X | X | H | |
Blechnum volcanicum | korokio | 30-50cm | X | a | X | a | a | X | H | |
Cyathea dealbata | silver fern | 5m | a | a | a | a | X | a | E | |
Cyathea medullaris | black tree fern | 15m | a | a | X | a | a | X | T | |
Cyathea smithii | soft tree fern | 6m | X | a | X | a | a | X | E | |
Dicksonia fibrosa | wheki ponga | 6m | a | a | X | a | a | a | H | |
Dicksonia squarrosa | rough tree fern | 2-4m | a | a | X | a | a | a | H | |
Doodia australis | pukupuku | 20-30cm | a | a | a | a | a | a | E | |
Doodia squarrosa | fine rasp fern | 15-45cm | a | a | a | a | a | a | E | |
Lastreopsis glabella | smooth sheild fern | 10-35cm | X | a | X | a | a | X | H | |
Lastreopsis hispida | hairy fern | 25-45cm | X | a | X | a | a | X | H | |
Lastreopsis microsora | creeping sheild fern | 40-90cm | X | a | a | a | a | X | E | |
Lastreopsis velutina | velvet fern | 20-50cm | X | a | X | a | a | X | H | |
Pellaea falcata | sickle fern | 25-40cm | a | a | X | a | X | a | E | |
Pallaea rotundifolia | button fern | 10-20cm | a | a | a | a | X | a | H | |
Phymatosaurus pustulatus | hounds tongue fern | 10-60cm | a | a | a | a | a | a | H | |
Pneumanopteris pennigera | gully fern | 100-150cm | X | a | X | a | a | X | E | |
Polystichum richardii | pikopiko, shield fern | 20-50cm | a | a | a | a | X | X | H | |
Polystichum vestitum | punui, shield fern | 50-120cm | a | a | a | X | X | a | H | |
Tolerates or needs a | Frost tender T | |||||||||
Tolerant of some a | Frost hardy H | |||||||||
Intolerant x | Frost hardy once established E |