Allium is the Latin word for garlic.
'Purple Sensation' or Hollandicum is a perennial, with short basal leaves dying down by flowering time. Flowers small, vivid rosy-purple, in crowded spherical umbels. Develops into large clumps that can be divided every few years. However, they really don't like to get waterlogged, so add a little grit to the soil when you plant them.
Position: Full Sun - Partial Shade
Colour: Rosy Purple
Flowering period: May to June
Hardiness: Fully hardy
Bulb Size: 14/16