I have about a dozen griselinia which have not grown as tall as the others. I have planted 22 for a hedge which are about 9 years old. What can I do to get them to grow higher and catch up to the others?
Griselinia are very popular and make great hedges. However, it can be frustrating when they don’t grow at the same rate. Your plants may need a boost to help promote strong, vigorous growth. Firstly, feed all of your griselinia now with a side dressing of compost as plants are coming into spring growth. Then apply side dressings of Daltons Premium Tree & Shrub Fertiliser at six weekly intervals from mid October until mid December, recommencing in March and feeding through until April.
Give your griselinia a regular deep water about two to three times a week to guarantee continuous summer growth over the hotter months. Always add a good layer of mulch around the plants to retain moisture, add nutrition and suppress weeds.