The name Allium is from the ancient name for garlic, which is part of the genus. There are estimated to be around 700 species within the genus, and many cultivars. There are perennials and biennials. Many members of the genus give themselves away with the distinctive smell of onions when the bulb or foliage is bruised.
Characteristics of Purple Sensation – Allium hollandicum
– A fall planted ornamental onion bulb, will produce purple flowers.
– This flower is sure to turn heads with its 4-inch wide globes of tightly packed pink-purple florets which sit at the top of a tall, thick, bare stem.
– In summer it bears umbels 8cm (3in) across of 50 or more star-shaped, deep violet flowers.
– Contact with bulbs may irritate skin.
– They are great for ornamental value and widely used for both landscape and cut flower purposes.
– The Allium Purple Sensation is ideal for containers, mass plantings, borders, and cut flowers.
– These plants are rabbit, squirrel, and deer resistant.
– The Purple Sensation has a bloom period of about 3 weeks and they bloom in late spring to early summer.
How to grow Purple Sensations
– Flower bulbs should be planted at least two and a half times the height of the bulb.
– They should be far enough so that they do not touch.
– Frost should be avoided while rooting.
– When planting in grass areas mowing should not take place until the
leaves have died off (about six weeks from planting.)
– Do not tie up or knot the foliage as this cuts off food supply.
– Plant in groups of ten or more for an eye catching focal point.
Basic Requirements to grow Purple Sensations
– Soil should not be too wet.
– Soil should be well drained but should have good moisture retention as flower bulbs are not deep rooted.
– Plant bulbs 5-10cm (2-4in) deep in autumn.
– The ideal PH level is approximately 6.5.
– It grows well in full sun or partial sun.
– The growth rate is moderate.
– Fertilizer is not essential but a dressing of a high potash and phosphate fertilizer may prove beneficial.