Planting Allium Bulbs

Alliums are amongst the most undemanding flower bulbs to plant tolerating most types of soil and hardy down to zone 4.

Planting allium bulbs.

Usda hardiness zone 3 8 full sun well draining soil. Plant bulbs in fall for a spring bloom. Once after planting moderately in spring. Planting in the ground.

The bulb forming alliums will need to be planted in the fall. So if you have a two inch bulb you would plant it four to six inches deep water them well after planting. 3 atropurpureum bulbs 10 nigrum bulbs. Plant this allium bulb collection and you will be so excited for next summer you won t want to wait.

How to grow alliums. Plant the bulbs at a depth of roughly 3 4 times the size of the bulb. Plant them at a depth of 2 3 times their diameter 4 6 in a well drained sunny or partly shaded site. When planting multiple allium bulbs the bulbs should be spaced 6 to 8 inches 15 to 20 cm apart.

When to plant them. These ornamental onions are bold and architectural with large rounded heads of usually purple flowers followed by attractive seedheads. They hate waterlogged soil. Space larger bulbs approx.

U003c p u003e allium sonoma collection. They should be planted in fall between september and november before the soil freezes. You will rarely have to worry about watering them as they actually prefer dry conditions. Doing so can improve drainage conditions.

Then cross your fingers and wait for spring. Deep pots are most suitable for alliums. 15cm apart but smaller bulbs can be spaced about 10cm apart. The planting depth should be two to three times the diameter of the bulbs.

6 8 apart 4 8 deep. Weave them through sunny borders or combine them with feathery grasses for best effect. Allium planting guide when. Alliums will grow perfectly well in a well drained soil.