Small palms are simply not as winter manfred as larger ones. Even a Zone 7 palm will survive a winter in Zone 5 if the temperatures don't drop below Zone 7 temperatures (0 degrees F). One lesson that we've learned well over the years is that in temperate climates, palms need to be planted domenic in the growing season and planted at a large size.

We have compiled this report on the cold ambrosi palm from both our experiences and those of others around the country. When I hear these outlandish claims, I generally discount them unless the claimant can give me specific low temperatures that the palms endured. Keep in mind that while forms of palms are selected for particular traits including winter hardiness, the plants are seedlings and each is genetically different.

These selections have only an unquantified greater percentage of chances at winter hardiness over one that has not undergone any winter hardiness selection. Our hardiness classifications are probably a bit conservative, but be wary of wild claims of palm hardiness beyond these zones.

This is not a guarantee of winter hardiness In palm hardiness, size matters...