DescriptionTrue or Common Comfrey (Symphytum officinale) is a hardy perennial shrub native to Europe and Asia and is highly valued for permaculture/subsistence gardens. Substantial foliage forms approximately 90 days after transplanting seedlings. Perennial. Planting DetailsOne of the most important things to know about comfrey cultivation is that the seeds must be buried. Unlike many seeds that are flexible so long as there is water, comfrey seems to not germinate well or at all with light exposure. SpecificationsCommon Name:True ComfreyScientific Name:Symphytum officinaleDescription:A perennial shrub with broad leaves and gorgeous purple flowers that make a great bumblebee forage.Plant Lifespan:PerennialCold Hardiness (F):Zone 3a (-40 to -35)Light Requirements:Full Sun (min. 6 hours a day)/Part ShadeSeed In:Winter-SpringSeeding Depth:1/4 in.Days to Sprout:7-14Optimal Soil Temperature (F):70-80Plant Spacing:2-4 ft.Plant Height:5 ft.Average Days from Seed to Harvest:N/A