Deer resistant: no
Moisture: needs continuously moist soil
Size: 36β H x 36β W
Bloom: white feathery flower spikes in June-July
Hardiness zone: 4
Astilboides is a magnificent foliage plant with large 1-2 foot wide round leaves suspended above the ground on thick stalks. It will over time form large stands or clumps. The thick, woody rootstocks are challenging to remove when clumps are well-established. It is best left alone once established. Panicles of creamy white flowers emerge in July, waving above the foliage on sturdy stalks. While many sources claim Astilboides is hardy only to zone 5, our specimen clump has thrived without any apparent winter damage for decades in our zone 4 climate. Astilboides is very sensitive to early season frosts. Emerging leaves will die back if frost-nipped, but not to worry: new leaves will soon emerge from the base of the plantlet. Astilboides may crisp up and go dormant late in the season if the soil is not kept moist. Deer have not generally bothered fully grown plants, but small animals or deer will browse emerging leaves if preventive measures are not taken. We have found that, if necessary, protecting the plant with a temporary wire fence when leaves first emerge is usually sufficient to stave off browsing. Early and repeated treatment with repellents also seem to greatly limit pest damage. Despite these issues, this plant is so impressive it is among our favorites. The flowers are an afterthought. This is a foliage specimen plant, and a stunning choice for a woodland setting, under trees, and with Hostas.