My friend is growing a Lily Pilly hedge, mine grew tall and thick. However hers had grown tall but very thin foliage. Any suggestions would be appreciated.
There are various factors that affect the plants growth. Firstly are they the same variety, if they are different the characteristics may vary. Secondly, the growing conditions, check the following: Light, soil and drainage, type and regularity of fertiliser used, presence of pests. Thirdly has one hedge been pruned more regularly than the other.