The Content Of The Article:
- 7 hardy palms
- No winter hardiness down to -25° C without wetness protection
- First harden, then plant out
- In the bucket winter protection is obligatory
Thanks to winter hardy palms, the dream of the tropical garden atmosphere is within reach. It is due to the increasing global warming that snow-covered palm fronds beyond the Alps have become a familiar image. So that the year-round tropical magic also finds its way into your green realm, it depends on the right selection. Not all palm species are prepared for the hardships of a Central European, wet and cold winter.
7 hardy palmsTherefore, please dig into the following selection of the 7 species for the garden with a frost resistance down to -25° C.
Dwarf hemp palm (Trachycarpus nanus)In the small garden and on the balcony you do not have to do without the joy of a hardy palm tree. The dwarf hemp palm comes from the Chinese province of Yunnan, where it can be found up to 2,300 meters in height. Therefore, it has a reliable winter hardiness, comparable to the Chinese and Wagner's hemp palm. Visually, the dwarf cannabis palm, however, differs significantly from their conspecifics. As a rule, she does not train a strain. Furthermore, their leaf segments are cut deeper. Although the palm remains at a limited height, every year it lays an average of 3 to 5 new leaf fans.
- Growth height: 1 m
Wagner's hemp palm (Trachycarpus wagnerianus)For gardens in a wind-exposed location, Wagner's hemp palm will be in focus. Equipped with a comparable winter hardiness, such as the Chinese hemp palm, this subspecies has more stable and smaller leaf fan. The dark green fronds are wonderful on the up to 35 cm wide, fiber-covered trunk, even if the wind shakes them. In terms of growth speed and growth in size, this hardy palm is in no way inferior to its big-leaved sister.
- Growth height: 12 to 14 m
Hemp palm 'Manipur' (Trachycarpus sp. 'Manipur')A new discovery from India causes a sensation among the lovers of winter-hardy palms. The relative of the Chinese hemp palm is native to the Indian region of Manipur, also hardy to - 25 degrees Celsius and towers above their conspecifics significantly. Their uniqueness is based on the white colored undersides of their majestic fronds. From the age of 5 to 6 years the leaf fans take on this color and keep it for a lifetime.
- Growth height: 14 to 20 m
Chinese hemp palm (Trachycarpus fortunei)
One of the best-known palm species for cultivating in the field comes from the Himalayas. The Chinese hemp palm not only convinces with a robust winter hardiness down to - 25° C, but puts at the right location every year between 10 and 20 cm in size. Visually, the sturdy survivalist has everything to offer what we want from a typical palm tree. The solitary stem of an adult hemp palm is studded with brown fibers and the remnants of discarded leaves. Expansive leaf fans on long stem petioles emerge from their trunk tips, which gather to form a head. The individual fronds can reach a span of up to 120 cm. With an annual increase of 15 to 30 cm, this winter hardy palm species is rapidly gaining in height.
- Growth height: 12 to 14 m
Needle palm (Rhapidophyllum hystrix)The needle palm leads the ranking of hardy palms unchallenged. Its decorative value is based on a short trunk over which rises a mighty mass of magnificent leaf fans. When the wind with the big fronds drives its games, a nice play of colors arises from the glossy-green tops and silvery shimmering undersides. The needle palm grows very slowly and over the years forms a dense cluster of several stems, which are armed with long spines. Due to the very leisurely growth large specimens are rare to get hold of in the trade and hit with several hundred euros to book. Please pay attention to the likelihood of confusion with the Blue Needle Palm (Trithrinax campestris). This is an Argentine palm species that is hardy only up to - 15 degrees Celsius.
- Growth height: 2 to 2.5 m
Dwarf palmetto palm (Sabal minor)This hardy as well as flowering palm tree should not be missing in any garden. Without dominating itself in the foreground, the dwarf palmetto palm tree delights with a colorful array of decorative and useful attributes.The plant is accustomed to harsh winter conditions from its North American habitats and can stand up to - 25 degrees Celsius. If the thermometer drops even lower, a Sabal minor regenerates quickly in the spring from possible frost damage. Thanks to its compact silhouette with a short stem and 4 to 10 leaf compartments, the jewelery is a sunny spot everywhere. Even at a young age, large, fragrant inflorescences are perched above the crowns, turning into a pretty fruit ornament in autumn.
- Growth height: 1 to 2 m
Mazari Palm (Nannorrhops ritchiana)This species of palm, still largely unknown in Europe, is native to the Middle East, mainly in Pakistan, Afghanistan and southern Iran. Here it grows to 1,600 meters altitude and is accordingly hardy. In full sun, dry locations, it is therefore among the frost-resistant species for the garden up to - 25 degrees Celsius. Furthermore, their shimmering heat up to 40 degrees Celsius in the summer does not matter, so they can be settled in the stagnant heat of inner city gardens without concern.
Characteristic of the Mazari palm is a branched, multi-stemmed growth with correspondingly numerous leaf crowns. Very decorative flourish the blue-gray to blue-green pinnate leaves. If the palm flowers in their habitats, the respective crown dies. In the Central European climate, however, a flower is rare, so that the palm tree not only retains all the leafy crowns, but over the years, the number still increases.
- Growth height: 6 to 9 m
No winter hardiness down to -25° C without wetness protectionPalm growers and distributors will gather information on winter hardiness in relation to the ideal conditions within dry habitats in the tropical and subtropical regions. The winter-hardy palms mentioned in this selection are in the mid-European winter absolutely dependent on a moisture protection to put their frost hardiness of up to - 25 degrees Celsius to the test. Please act according to two important rules of thumb: The younger the plant, the more extensive the protection. Do not equip winter hardy palms with winter protection longer than absolutely necessary. The following measures have worked well in palm care:
- Central time window for protective measures: end of December to beginning of February (in normal winter weather)
- Tie leaf heads together with a rope loosely
- Alternatively, cover the crowns with breathable, translucent fleece
- The root disc cover with a layer of foliage, straw or bark mulch
Tip: In snowy and rainy winter frost-resistant palms in the garden are threatened by drought, as they continue to evaporate moisture over their evergreen leaves. Regular watering on frost-free days is therefore an important part of the winter care program.
First harden, then plant outFresh from the greenhouse, young palms do not yet have the robust frost resistance of their adult conspecifics. In order for a hardy palm to gain the upper hand in a silent fight with frost and snow, in the first three to four years it should gradually become accustomed to the harsh conditions of winter. We therefore recommend that you first subject the species presented in this selection to the following hardening program before planting them out in the garden:
- Cultivate hardy garden palm trees in the tub for the first 3 to 4 years
- In the first winter allow temperatures from - 7 degrees Celsius
- In the following years from year to year later grant a frost-free, bright winter quarters
- Plant out in the fourth year at a suitable location in the bed
In the bucket winter protection is obligatoryA hardy palm in the bucket does not lose its life spirit under a snow load, if its root ball is protected by a warming winter coat. Hardened and planted palm trees can rely on their hardiness as their roots are well protected from the cold deep in the ground. The limited substrate volume of the palm tub can not guarantee this frost protection. With the following precautions you can help hardy palm trees in the pot:
- In winter, place the bucket in front of a protective wall facing south or west
- To protect against ground frost place the container on wood or polystyrene
- Wrap the pot several times with bubble wrap
- The film is covered with a coconut mat that towers over the edge of the tub
- Pile foliage, straw or bark mulch on the root disk
Among the more than 2,600 palm species there are only 7 hardy species for the garden with a frost tolerance to - 25 degrees Celsius. The winter hardiness in the Central European climate has been demonstrated thousands of times by the needle palm, the Chinese hemp palm and its counterpart for wind-exposed layers, Wagner's hemp palm. In the small garden, the dwarf hemp palm tree is useful as a frost hardy species. In contrast, the new discovery 'Manipur' still lacks a sufficient number of empirical values. Due to their close relationship with established hemp palms, the promised winter hardiness of - 25 degrees Celsius is likely to be confirmed in the next few years. Who wants a frost-hard garden palm, which blooms at a young age, will favor the dwarf palmetto palm. To enrich an existing palm collection with a winter-proof rarity, the Mazari Palm is just right.