Blue Stem Willow A highly colourful willow, bragging purple young shoots with grey-red catkins in spring, beautiful narrow foliage in summer lovely yellow autumn leaf colour, and blue-white winter stem colour. A truly under-utilized willow, Salix irrorata grows to a mere 8-10ft making it perfect for any garden or even large pot.Site: Tolerates some coastal exposureSoil: AnyPosition: Full sunNotable uses: Ornamental colour, basketryHardiness: HardyHeight: Up to 10ft (3m) Spread: 10ft (3m)