Monrovia sells widely, offers an assortment of box. It's not on this results page for searching their web site but other pages on their site have a Retailer Locator dialog box where you can enter your zip code and find out who nearby has been buying from them. Here is a link that might be useful: Plant Finder Results for buxus

hello i search all different species and varieties of buxus . i can exchange with other varieties my want list: buxus (all types) magnolia's phyllostachys helleborus galanthus

hi, i have both the buxus hyrcana and buxus microphylla in my garden , i don't know what is their minimum temperature, it's difficult to test that here, this information is based on lynn batdorf's work about buxus, where they have tested the hardiness of buxus in USA i'm in zone 7, average minimum temeratures where i live are -10°C to -15°C , but i'm good protected from cold dry winds. i think buxus hyrcana is not very cold hardy , but i don't know. do you have one of the buxus species? are you more interested in pines? i have a few pinus species too...other rare trees and shrubs, woodland plants . i can send my total plant list by email. i have pictures of all these buxus in my garden.

I'll say upfront that I don't have experience with boxwood, but looking at the plant on Monrovia's site it says needs protection from winter winds. I don't know that the cold will be as much an issue as wind. I think they'll get freeze dried. Still, if you must have the plant, go for it, just don't put in a hedge of 30 of them. Try one or two and see what happens. I'll link CSU's fact sheet for Native Shrubs for Colorado. Maybe you'd be willing to try a few natives, too. Native Shrubs for Colorado Good luck! Barb