Our annual end-of-summer contest is here, come on down to the Dave's Garden County Fair!

Rose Mallow, Annual Mallow (Lavatera trimestris)

Mississauga, ON(Zone 6a)

Very easy to grow annual in full sun (at least 6 hours). Seeds are easy to collect once the seed pods are dry & store well over the winter until the next spring.

Common name: Rose Mallow, Annual Mallow
Family: Malvaceae
Genus: Lavatera
Species trimestris

Plant Link: http://plantsdatabase.com/go/24/

Thumbnail by SunshineSue
Haverhill, MA(Zone 6b)

Do the petals of this plant form a "balloon" for a while before they fully open?
I have some plants that look a lot, but not exactly, like this photo. I can't tell if they are self-sowing annuals, or perennials; they reappear where they were last year, but seem to spread easily. I can see that some people might think they were invasive.
thanks for any info.

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