1) Rhododendron luteum
- Also called Yellow Azalea or Honeysuckle Azalea.
- Despite the sweet perfume, the nectar is toxic. Records of people poisoned by eating the honey date back to 4th century B.C.
- Cultivated both as an ornamental and as root stock.
2) Laburnocytisus adamii
- Also known as Adam’s laburnum or broom laburnum.
- Considered a horticultural curiosity, some branches produce yellow flowers while other branches produce coppery-pink flowers.
- Located along Arboretum Drive south just south of the Sassafras.
3) Paeonia Lutea var. Ludlowii
- A rare Chinese form of tree peony.
- Large saucer-shaped blooms appear in late spring in a beautiful clear yellow color.
- Avoid pruning except to remove large branches.
- Located along Arboretum Drive across from the Sequoias.
4) Petteria ramemtacea
- Fragrant yellow flowers in early summer and tri-foliate leaves make this unusual plant resemble a shrubby golden chain tree.
- Native to Yugoslavia and Albania.
- This specimen is located along the east side of Arboretum Drive behind the Dove Tree.
5) Sophora microphylla
- Known as the Kowhai tree in its native New Zealand.
- The blooms of the Kowhai are regarded as New Zealand’s national flower.
- All parts of the Kowhai, but particularly the seeds, are poisonous to humans.
- Located along Arboretum Drive