Don’s Expert Answers: not sure how high my tree will grow

Question From:
David in Nambour, Nambour Queensland

Nature of problem:
not sure how high my tree will grow

Type of Plant (if known):
photinia x fraseri red robin

Symptoms of Plant Illness (please try NOT to diagnose your problems yourself):

Soil Type (e.g. sandy, clay or loam) OR Potting Mix Type:
mostly clay

How often do you water the plant:
often enough

How many hours of sunlight does the plant get each day:

How long since you planted it:
1 year

Have you fertilised? If so, with what and when:

Is the plant indoors or outdoors:

Is the plant in a pot or in the ground:

What other treatments have you given the plant:

Upload photo if available:

Other Comments:
gday Don.

I planted photinia red robin to cover a neighbours window that’s about 3.5m high. the tag came with the plant said it will grow 4-5m which is good. but researching a lot of aussie plant stores online state its will grow 3-4m even averaging 3m. which is not enough. Should I believe the original tag instead?


Hi David, Plants vary in height according to soil, rainfall, fertiliser added etc. Nonetheless 4-5m is a good average for ‘Red Robin’. Nearly all plants grow larger than the label says. My dwarf Baeckea was labelled 30cm x 30cm – it is now 4-5m tall and 6-7m wide. My grevillea ‘Elegance’ was labelled as a shrub growing up to 4m x 4m – it is now 9m tall and 20m wide. So relax. Going online is not really “researching” since much misinformation clutters the online world. Don