Spread: Can grow up to 2 to 3 metres tall, but with hard pruning after flowering, you can keep as a miniature - perfect for space saving! Supplied: Supplied as a 1 - 1.2m tall plant in a 5 litre container. Magnolia yellow bird tulip tree: Grab yourself a magnolia yellow bird tulip tree. Statement: Bright and bold, make a statement in your garden every springtime! Blooming season: Buds start blooming from late April and continue into early summer. Flower size: Each flower on this tree grows to be around 6 to 7 inches in size. Magnolia Yellow Bird Tulip Tree | Living Social