As a guide:
9cm – currently 30-50cm high
5 litre – currently 50-70cm high
10 litre – currently 80-120cm high
20 litre – currently 110-120cm high
IMPORTANT CONSIDERATION: We don’t find the height of Griselinia Green Horizon to be an important factor when considering the quality of the plant. We trim all of our hedging plants several times a year to promote a bushy plant, that will be ready to form a decent hedge right away. Height isn’t everything – while a 2 litre plant could easily be 1m tall without trimming, this ‘leggy’ specimen wouldn’t be the kind of plant that you want for a hedge. A trimmed one with multiple shoots, will establish as a hedge much more quickly.