Want this question answered?
I assume when you say limelight, you are referring to Limelight Hydrangeas. The name refers to the showy, chartreuse, cone-shaped flowers that eventually turn rose-colored in fall. Limelight Hydrangeas are deciduous shrubs, and its blooms are beautiful in both live and dried arrangements.
only of they are an obstruction as they are a pain to trim.
they change colour with the soil pH level.
yes
I posted a link that has everything you need to be succesfull in you Hydrangeas planting in the related links box below.
In gardening
No.
Hydrangeas
Aqua blue.
It grows back.
Mophead hydrangeas (h. macrophylla) bloom in Chicago (zone5) in late May or early June, depending upon the site conditions.
Hydrangeas are not particularly dangerous to dogs. Dogs should not be eating weeds or flowers on a daily basis. If a dog overeats anything, it can be unhealthy.