Yellow Pulmonaria . However, they are not suited. Give the vines plenty of room; Picture and description of Pulmonaria angustifolia 'Blue Ensign from www.pinterest.com Plant several clumps of lungwort ( pulmonaria spp.) where you can see them from indoors, as they will be one of the earliest perennials to offer a source of nectar for your hummingbirds in spring. Their leaves can be very decorative and the silvery types light up dark areas. The alternative is black peat enriched soil.