The Cordyline is very distinctive with its palm like appearance and adds that element of the tropics, sandy beaches and holidays. There are numerous mature Cabbage palms (also called Torbay or Torquay palm as many grow there) in Cornwall as they seem to enjoy the mild wet climate.
Cordyline australis is not really a tropical or jungle plant and in fact it does not like that type of climate. They are hardy in the UK in all but the harshest of winters such as the winter of 2010 to 2011 where it reached -20°c in some parts. Due to the unusually low temperastures many were cut down to the ground but many regrew. In the milder regions of the UK they remained unaffected.
The Cordyline tree can take temperatures down to -9°c so it does stay evergreen all year round and are frost hardy. Some cultivars however are not as hardy as the plain green variety you see growing most commonly. The pink varieties are reported to be more tender with the exception of Cordyline australis 'Charlie Boy' which is just as hardy as the green ones.
Cordyline Plant Care
Cordylines do not require pruning as such, they are pretty much maintenance free and can be left alone which makes it great for a low maintenance garden. The only Cordyline care I have ever needed to do is to remove the lower leaves as they dieback to keep it looking tidy.
They can produce flower stems not unlike the Yucca and these can also be removed when the flowers die to keep the plant looking tidy.
Snails can be a problem as they can hide in the crown and come out to munch on the leaves which makes the plant look untidy. The snails are pretty easy to spot and remove and it really only seems to be a problem with younger less mature plants.
Cordyline Plant Varieties
Here is a list of Cordyline varieties with hardiness temperatures. I have taken the temperatures from past experience and sources online so take as a guideline.
The new coloured varieties can add a real eye catching feature to your garden and add that exotic appeal. As they are evergreen they remain in leaf all year round and do not die back unless we get a really harsh winter as in 2010/11.
‣ Cordyline australis, green -9°c
‣ Cordyline australis 'Cardinal', red, -5°c
‣ Cordyline australis 'Pink Passion', purple centre stripe with pink edges, -5°c
‣ Cordyline australis 'Claret', purple, -5°c
‣ Cordyline australis 'Purple Sensation', reddish purple with cream stripes and central pink stripe, -5°c
‣ Cordyline australis 'Red Star', lighter red bronze, -5°c
‣ Cordyline australis 'Southern Splendour', greeny grey with pink margin, -5°c
‣ Cordyline australis 'Sundance', green with central pink stripe, -5°c
‣ Cordyline australis 'Torbay Dazzler', green with cream margin, -5°c
‣ Cordyline australis 'Charlie Boy', red purple with pink margin, -9°c
‣ Cordyline australis 'Pink Sensation', red purple with pink margin, -6°c
‣ Cordyline australis 'Red Sensation', darker red purple, -1°c
to -9°c(needs verifying)
‣ Cordyline australis 'Torbay Red', burgundy red, -5°c
‣ Cordyline australis 'Sparkler', green pale red stripe and cream margin, -5°c
‣ Cordyline australis 'Sunrise', dark pink with bright pink margin, -5°c
‣ Cordyline australis 'Verde', green, -5°c
‣ Cordyline australis 'Purpurea', purple, 0°c
‣ Cordyline australis 'Pink champagne', pink flush near base to green with white cream margins, -5°c
‣ Cordyline australis 'Choc Mint', chocolate brown with mint green margins, -8°c(needs verifying)
Cordyline australis For Sale
You can find quite a diverse range of Cordylines for sale online covering the green, reds and pink colour ranges. We really are spoilt for choice and the range is growing to rival that of Phormiums.
We should mention that there are other Cordylines such as Cordyline banksii, Cordyline stricta, Cordyline obtecta and Cordyline fruticosa but are not commonly available. They have not been widely grown and tested in our British climate as well as australis.
The standard green Cordyline is the hardiest and the most established in the UK. The purple and reds vary in hardiness but are the next most established.
The most colourful and interesting are the pink varieties with each cultivar varying slightly in appearance but seemingly varying greatly in hardiness and reliability.
I stumbled across the pink striped 'Charlie Boy' some time ago and managed to get hold of one after much trying. Then in 2017 at a plant fair I spoke to someone who had one for sale who was a friend of the person who originally grew it from a seedling which was supposed to be the standard green variety.
He had been growing it in a relatively exposed position for several years and hadn't suffered any damage at sub zero temperatures. The plant has been exposed to periods at -9°c suffering only slight frost damage.
Varieties such as Charlie Boy are more widely available and are well worth buying as an addition to the green Cordyline.
Most Popular Cordylines
The Cabbage palm or Torbay palm as I prefer is an iconic plant that adds a touch of the exotic to a garden. Whilst there a number of more colourful varieties the most popular and most readily available Cordyline plants are the green C. australis and C. australis 'Red Star'.
This sub tropical Cabbage tree is fast growing and once the roots are established can put on a foot a year. In favourable conditions this palm has been known to grow 10 feet in 3 years.
I have found they seem to grow faster when given sun, space and well drained soil. I have some growing on raised ground (pictured above) where it stays very dry.
On the opposite side of the garden I have one that looks great and is growing rapidly in a dry shaded location facing west and sheltered on the east side by a fence.
I have only ever seen mature green plants and semi mature red and purple leaved sports. The pinks are relatively new in their widespread availability and so are still few and far between in our British gardens.
It would however be an amazing site to see a fully mature multi headed 'Charlie Boy' as large as the palms you see in Cornwall.