Tree comparisons
| Birch Royal Frost |  Autumn Spire | |
|---|---|---|
| An unusual silver birch with bronze-coloured leaves, and a white stem. | Autumn Spire (Flanrock) is a columnar rowan with yellow fruitlets and excellent autumn colour. | |
| remove | remove |
Growing
| Birch Royal Frost | Rowan Autumn Spire | |
|---|---|---|
| Gardening skill | Beginner | Beginner |
| Awards | RHS AGM (current) | |
| Attractive features | Attractive bark Attractive foliage Autumn foliage colour | Attractive foliage Autumn foliage colour |
| Growth habit | Upright-spreading / Vase | Columnar / Fastigiate |
| Height after 10 years | 5m-8m / 16ft-25ft | 3m-5m / 10ft-16ft |
| Sunlight | Prefers full sun Some shade | |
| Pruning | Do not prune | Light prune |
| Growth rate | Average | |
| Site conditions | Occasional flooding Occasional drought | Windy site Occasional flooding Coastal site |
| Wildlife | Attractive to birds |
Identification
| Birch Royal Frost | Rowan Autumn Spire | |
|---|---|---|
| Flower colour | White | |
| Flowering month | May June | |
| Leaf colour | Bronze | Green |
| Leaf colour - autumn | Multiple tints | Orange / Gold |
| Fruit colour | Yellow | |
| Fruit persistence | Persistent | |
| Bark | White | |
| Country of origin | United States | Ireland |
| Annual cycle | Deciduous | Deciduous |