Follow-Ups to Answer from Expert Long Island Gardener
Julie wrote at 2011-07-19 16:41:30
I live in zone 5 and have gadioli that come back every year, without having to dig up the corms in the fall. They are next to a concrete swimming pool, so maybe that explains why (the expert said that if they are next to a concrete foundation it absorbs and retains the heat.)
Ritaskippy wrote at 2012-08-31 05:06:39
I live in upper Michigan and I left my gladiolus out for winter last year cause I didn't have time to be messing around with them. And this summer I had beautiful yellow, white, and pink gladiolus. And they got about 3 to 4ft tall! And in the winter here we get about 10 feet of snow! And where u have yours planted there getting protection from the wind and that. Also in the winter being that there close to your house they are more likely to be alright! Mine are right in the front of my house and the heat off my house in the winter helps the ground from freezing where the flowers are.
Doug wrote at 2014-08-26 19:47:15
I live in southern Michigan. I didn't know I had perennial glads but they have been coming up for several years. They set new corms like mad and I have to keep thinning them. They are not doing quite as well as they used to because the area is getting more shade. I am pretty sure I used to have colors but now they are all white.
What`s growing in your garden? Delphiniums, Painted Daisies, Roses, Peonies, Lilacs, Tuberoses, Parrot Tulips and Double Daffodils -- I`ve never met a perennial I didn`t like, but I have a weakness for flowers with fragrance. Here in Zone 7, on the North Shore of Long Island, New York, I can`t think of a better way to spend a summer morning. I'm educated in this field, but even better, I am genetically qualified: Part English gardener ancestry, part Irish potato farmer. I have degrees in related fields and a lifetime of hands-in-the-dirt experience. Not convinced? I have a daughter named Holly, a dog named Daisy, a bird named Buttercup, and a house on Garden Street. Still working on the license plate.
Homeowner for 15 years, 30 years of gardening for personal pleasure, college credits in horticulture and botany, volunteer docent at the local botanical gardens and a library of gardening and landscaping books, some 100 years old.