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Cia

When buying plants from my local supermarket i occasionaly see the label "indoor and or outdoor plant"

I dont understand this?

sotongeoff

Two examples-pelargonium and impatiens-what your a probably looking at something that is not fully hardy-but is suitable as a houseplant or for growing outdoors-there are probably many others but these two spring to mind.

marshmello

Plants that like warm conditions outside like during late spring/summer months, but need to be brought under cover during the rest.

Cia

Thank you for your replies. How does a plant become hardy in the first place?

sotongeoff

All plants are hardy to a certain extent if you travel abroad you will see what we would class as unlikely plants for bedding schemes-have seen poinsettias in the Canaries used for that effect,

So it is not really the plant- it is the country it grows in that determines hardiness

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happymarion

All plants have evolved to fit their environment over time, but the ones we grow in our gardens, unless the pure species , have been bred for colour, fruit, longevity, pest resistance etc by nurserymen so some may have hardiness to a different country than their own built in.  If so, the label will tell you.  For instance Gardenias used to be conservatory plants only but now "Kleim's Hardy" will grow outside.

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