I sometimes see them for sale at Home Depot and Walmart garden centers so you might ask at your local garden center to see if perhaps they carry them or could order one for you from their supplier. You didn't state where you live and there are restrictions about shipping plants across borders but you might want to post over on the plant and seed trading forum to see if a member has one for trade or postage: http://garden.org/forums/view/...
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!