Plants do not stop growing, so a general guide of eight to 10 years is the easiest height to give.
Unfortunately, some labels are made overseas so can vary slightly.
Plant growth is also affected by many other factors like wind, water, fertiliser, soil type, pests and diseases, so plant growth can be turbocharged when given the right factors.
If you are unsure or want to check, just ask the experts - that's what we are here for.
Darryl Pierce
Palmers Rotorua owner
I always enjoy reading the little "in history today" column in the Daily Post, but it seemed like the Spartans got a raw deal last week when the battle of Thermopylae was remembered.
The entry just said that the Greek Spartan King Leonidas was defeated by the "Persians": no mention that Persian King Xerxes had 600,000 frontline soldiers and probably as many support troops too, against the famous "300".
I guess after nearly 3000 years Leonidas can't complain, though: he's still in the news.
GJ Philip
Taupo
Perhaps Mr Sturt might like to take a gentle stroll through some of the streets in the suburb of Mangakakahi and discover for himself the parlous state of footpaths.
As resident in that area I would be delighted not to have to dodge subsidence, crumbling kerbs and other sundry obstacles as I walk for my regular exercise.
Rosemary MacKenzie
Rotorua