Joseph's Take
The Head over Heels series has larger flowers. They are perennial and can be trimmed to the ground after each season.
Mature Height: 3'
Mature Width: 4'
Flower Season: Summer
Sun: Full Sun
Hardiness Zone: 4 to 10
This plant is suitable for the low temperates below:
Temp (F)
Zone
Temp (C)
-30 to
-20
4
-34.4
to
-28.9
-20 to
-10
5
-28.9
to
-23.3
-10 to
0
6
-23.3
to
-17.8
0 to
10
7
-17.8
to
-12.2
10 to
20
8
-12.2
to
-6.7
20 to
30
9
-6.7
to
-1.1
30 to
40
10
-1.1
to
4.4
