Shrubby perennial to 3 feet
Please don't write and ask where you can buy this plant, because we frankly have no idea. But this is too good a perennial not to mention, and perhaps this mention will spur some nursery grower into producing it or will turn up someone who already is. If we find a source, we will mention it in a future issue.
This plant is commonly called yellow flax, though it is not related in any way to the flax used to make fibers for fabrics and linseed oil (that is an annual named Linum usitatissimum). It does have similar flowers--five petals in a trumpet shape.
The flowers are a spectacular sunny yellow, all the sunnier because they bloom in the depths of winter, typically in December and January. They bloom the lengths of the stems, which are about three feet long, so for two months this plant is a blaze of yellow.