In my experience, these tall perennial bulbs are best kept out of containers and instead should be planted ... and can be grown from US hardiness zone 5 plus. While this unusual spring flowering plant ...
Some perennials are best cut back in fall to keep them healthy, as the plant material can overwinter diseases and pests that may come back with a vengeance in spring. Then there are those gardeners ...
In the case of spring flowering bulbs, mulch applied after ... the mulch that will ultimately weaken the plants. Useful and effective mulches for perennials and bulbs include: 5 or 6 inches ...