Yellow giant hyssop is a very, very tall herbaceous perennial. In about 80% shade, it reliably gets over 8 feet tall in my garden. Even w...Read Moreith the height, it is not prone to flopping. In fact, the stem is a marvel in itself as, in section, it is perfectly square and hollow inside and very strong. My kids like playing with sections of the stem and blowing in the voids as if they are flutes.
It blooms over a long time -- July through September. I'm still debating whether or not this is an attractive plant. En masse, Yellow giant hyssop plants can create a kind of candelabra effect with its flowers. The flowers, however, are nondescript, quite small, and greenish white. The large, heart-shaped leaves can be attractive, though. It's not a showy plant by any means, but it's not really weedy looking either.
Pollinators do love this plant. Lots of bees, bumblebees, wasps, and flies, which is kind of remarkable for something that can grow in the shade. Speaking of which, I wouldn't plant this in deep shade or full sun. In-between these extremes, it's very adaptable and, once established definitely drought tolerant.
Yellow giant hyssop grows readily from directly-sown seed in the fall. (Needs cold stratification.) It will bloom the first year of growth, but will only grow to about 4 feet or so high. Then it truly takes off in the second year.
I have been trying to ID this plant for years and just found out what it was. I have at least one wild plant growing in the briers, bush...Read Morees and weeds along the road frontage. The plant is about 8 feet tall and 3 feet wide ! I will definitely be collecting seeds this year to try to grow more in my gardens. It's a beautiful plant, and if the insects and hummers love it, all the better.
Tall to 7' - Plant 24" apart. z5-10. Equally good in the border, and as a candidate for container growing. The better the drainage the ha...Read Moreppier the plant. Attractive to hummingbirds and butterflies, with mint scented foliage.
Yellow giant hyssop is a very, very tall herbaceous perennial. In about 80% shade, it reliably gets over 8 feet tall in my garden. Even w...Read More
I have been trying to ID this plant for years and just found out what it was. I have at least one wild plant growing in the briers, bush...Read More
Tall to 7' - Plant 24" apart. z5-10. Equally good in the border, and as a candidate for container growing. The better the drainage the ha...Read More