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do wall flowers only last one season




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I presume you dont mean Perennial Wallflowers Erysimum? The one I think you mean is treated as a biennial sow in July plant in place in October to flower next year.

15 Jun, 2010

 

In theory, they are perennial but keeping for a second year is a waste of time as Drc726 has.

15 Jun, 2010

 

I chopped my wallflowers right back after flowering last year to the tiny green shoots at the base - I had an even better display this year, and have chopped them down again this year. I bought them as a bunch of bare roots so not 100% sure what type they are. If you see tiny green growth right at the bottom, I would cut them down to this to see what happens .. unless you need the space you have nothing to lose.

16 Jun, 2010

 

Good one, Njarratt.

18 Jun, 2010

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