wagnerianus is a cold hardy palm with fronds that are much more rigid,
smaller, and less deeply divided than the more common Trachycarpus fortunei (Windmill Palm).
Because of this, they are more resistant to wind damage and can easily handle
snow load. The foliage is a darker green than T. fortunei, and the trunk has
thicker fibre which hides the cut off leaf bases to make for a tidier
appearance. These characteristics have made it one of the most sought
after palms around the globe.
The cold hardiness of Trachycarpus wagnerianus is similar to Trachycarpus fortunei: -12°C to -17°C (10°F to 1°F). The parent palms for our seeds have endured prolonged severe cold without damage when Trachycarpus fortunei had frond damage a few blocks away. Once a Trachycarpus wagnerianus gets established it grows fairly quickly (over 12" a year).
I have had reports from Phoenix Arizona that Waggies from my seed breezed through repeated exposure to 100F+ heat without damage.
Studies have shown that Trachycarpus wagnerianus is the best performing (tested) palm after transplant, establising quickly.
Hybridization of Trachycarpus
Trachycarpus palms are dioecious. This means each specimen is either male or female. This allows the pollen from one specimen (male) to be used to pollinate the flowers on a female specimen of a different Trachycarpus species. The resulting palm seed produces a palm that has characteristics of both parents. Our hybrid Trachycarpus are similarly hardy to pure Trachycarpus wagnerianus. These are:
2. Trachycarpus wagnerianus x fortunei nainital (female is Trachycarpus wagnerianus). For this mix we use male pollen from a Trachycarpus fortunei nainital. This variant of fortunei is larger than regular fortunei. Combined with the wagnerianus female it makes for a very sturdy large deep green palm.
3. Trachycarpus fortunei x wagnerianus (female is Trachycarpus fortunei). For this mix we chose a particular female Trachycarpus fortunei that has large, very stiff fronds. It is more resistant to wind and snow than most Trachycarpus fortunei. Combined with the wagnerianus pollen, it makes for a palm with strong larger fronds than pure Trachycarpus wagnerianus.
4. Trachycarpus mystery palm x wagnerianus (female is Trachycarpus of an unknown species). The female palm we grew from seed. The seed batch was Trachycarpus latisectus, but this palm was something else. It is as hardy as Trachycarpus wagnerianus, but it's unique feature is circular fronds on every petiole, with many actually overlapping at the petiole. A picture of a frond can be seen to the right. It has been pollinated with Trachycarpus wagnerianus to produce seeds.
5. Trachycarpus nova x wagnerianus (female is Trachycarpus nova). The parent female T. nova is a very fast growing palm, which is displayed in the leaf bases that are very far apart (see photo to right compareing it to the Trachycarpus in the background). The trunk fibre is more tightly woven than my other Trachycarpus. Leaf splits are fairly even.