Thanks for your input! I have had the agastache AND the lavender Munstead in the garden in the past, and not come back, either due to rotting/wetness or cold, or both. So I decided to try them in pots. To be honest, they were already-grown pots purchased locally on sale and from Bluestone Perennials, on sale last year. I love them for cutting. I am pretty sure they are doing fine out in the unheated garage...we water a little every few weeks, that's all. The Chabaud carnations I planted from seed...will bloom this summer. I winter-sowed a bunch of other annuals/perennials a few weeks ago in pots/containers. We still have tons of snow, so it will be a few months before anything gets planted out anyway. :0) Phyl

They seem to be doing well, at least from the picture. They probably are making seeds. Are the leaves themselves dying? Lavender don't like to be overwatered, they like good drainage too. If you want more flowers, it's usually a good idea to deadhead them before they go to seed.

Lavender is a perennial plant and will not flower as long as an annual plant will. You're nearing the end of its flowering season and it will spend the rest of the year (well, until next year at flowering time) growing roots and foliage. That said, Lavender desperately needs drainage. If you transplant it into the ground, make sure water drains away quickly. I plant mine with actual rocks in the planting area. The place it has done the best for me? Blazing hot, scorching sun, right at the road where it almost never got watered, had almost no "soil", and flourished. Good luck!

This probably won't be helpful, but I have catmint (Nepeta faassenii Select Blue bought from High Country Gardens back in 2015) and lavender (don't recall the variety, but I think an English lavender) in my Austin-area garden (clayey soil, so not great drainage) and for me, the catmint stays short, sprawls a lot, and the blooms are rather inconspicuous. My English lavender has bloomed and is lovely, but had some sporadic die-off during the winter (perhaps due to the lack of drainage). The shape of the two plants, for me, is very different - catmint spreads outward a lot but I can't get it to lift up off the ground. The lavender is a rounded shrub and is much taller, especially when blooming. I have googled the catmint variety and mine does not look at all like the photos so it seems likely that I am doing something wrong. Oh - also, if you have cats in the area, you'll need to protect the catmint until it grows large enough to fend for itself. Actually, that could be the problem for my plant - I know it gets frequent visits from the neighborhood strays. Based on their performance in my garden, I prefer the lavender. I also am not a huge fan of the catmint scent.