- The deep yellow flowering sun spire magnolia is at maturity a small to medium sized member of the magnolia family. Yellow flowers bloom well after the last frost. The tree features attractive dark glossy green leaves.
- The sun spire magnolia is rated to grow in USDA hardiness zones 5 to 8. It is best planted in full sun in an area suitable for a mature tree topping out at 10 to 15 feet in height. The tree will tolerate partial sun. The shape of the tree is more tall than wide, making it suitable for small gardens and yards and as an ornamental street-side tree.
- Sun spire magnolias perform best in well-drained, slightly acidic soil that is high in organic matter. Soil pH in the 5.6 to 6.0 range is appropriate for this tree.