The windmill palm is a common name give to palm in the botanical group Trachycarpus , the most widely arise windmill palm tree specie being Trachycarpus fortunei and Trachycarpus wagnerianus . Demonstrating excellent wintertime cold tolerances , windmill palms are naturally slowly - growing , but their yard of outgrowth can be hastened with uniform soil moisture , an even fertiliser regime and a long , warm develop season . At best , a windmill ribbon can be coaxed to maturate no more than 12 to 18 inch each year , rarely 20 inches .
Step 1
render one to two inches of irrigation piddle to the root zone of a windmill medallion during the affectionateness of the originate time of year . Although drouth - tolerant , the palm will increase its growing if the soil is always moist but never soggy . Reduce lacrimation in the cooler winter month .
Step 2
Apply a slow - discharge granular fertiliser formulated for ribbon and the soils in your part . Often call " medallion special , " the plant food contains nutrient all-important for respectable medal frond growth . touch your local conjunctive telephone extension office for the specific timing of impregnation of medallion in your region , but in general , fertilizer should be applied in spring , summer and early autumn .
Step 3
Increase the warmth receive by the palm in the cooler spring and mid - autumn month . Palm root growth increase once grunge temperature are above 70 degrees Fahrenheit . pull back mulch in former springtime so the sun more quickly warms the soil or position the palm in a warm microclimate , such as along a southwestward - facing edifice facade , can lengthen the growing time of year .
Tip
The palm peculiar fertilizer must have primal micronutrient , particularly magnesium , atomic number 25 , boron and atomic number 26 , to encourage slimly quicker sizeable growth of the windmill palm . Do n’t use liquid fertilizers , as they leach out of the land before the palm can systematically take up the nutrient . If the palm is not get enough sunlight , its growth rate will naturally be obturate .
Warning
Windmill palms , through their genetics , are slow- to restrained - grow plants . They will never arise as fast as world-beater thenar , for example . Windmill palms are a montane subtropical decoration and do not prosper in warm tropic regions where dark temperatures remain above 70 academic degree Fahrenheit .
