Maple Avenue Greenhouse is owned and operated by an Amish family. Open to the public, just north of Kalona, Iowa. Every spring my wife and I go pick up plants for the garden here. Things like tomato plants, pepper plants, annual or perennial flowers, rhubarb, or even garden tea; whatever you want to grow in your garden or flowerbeds.
There really is nothing quite like the smell of a greenhouse! My wife is more of a gardener than I am but I always enjoy going along to Maple Ave. and walk around looking at all the growing things and taking in the awesome aroma. Not to mention, there are usually little Amish children playing in the house-yard nearby, which ads to the ambiance.
The place looks empty here but there are usually Amish girls working to keep everything tidy.
Make sure to see their private Covered Bridge! Ask them about it at the greenhouse. It is over a creek leading to their tree nursery. Go look at baby trees, even if you don't want any... just to take the drive over the covered bridge! I talked to the Amishman that owns this place last summer, I think he said that it was an existing building that he converted into a covered bridge, but I'm not sure I remember that right. Ask him about it, he would be glad to tell you. I told him that people will get a big kick out of his bridge and he got a huge grin and asked, "Really?" Be sure to compliment him on it, he is hoping you will like it! You can also see the covered bridge in the photo below, and the tree nursery.
If you're in Kalona, find the "Casey's General Store" and go straight north from there, past Kalona Mennonite Church. You will also pass by the Kalona Harness Shop (another great place to stop.) It's on a gravel road but only about 1/2 mile off pavement. If you are up for more adventure, keep going north from here about another mile, you will come to a T intersection. Turn right and head another 1/2 mile and you will find the Golden Delight Amish Bakery and the best doughnuts in the world! Golden Delight also has a nice gift shop.
I took this photo right next to the greenhouse (it's their pony)