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Q.My lewisia tweedii seeds won’t germinate

Zone Ws9 0ju | Anonymous added on May 20, 2020 | Answered

I grow from seed lots of lewisias, but the only one that won’t germinate is tweedii lemon. Am I doing something wrong? please help

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Certified GKH Gardening Expert
Answered on May 21, 2020

The seeds of Tweedia should be fairly easy to germinate; they do need bottom heat though.
Heat the bottom of the nursery tray with a warming mat set to 70 degrees Fahrenheit if you are germinating the seeds indoors where temperatures are typically cooler. Leave it at 70 F at all times during the germination process.
I hope this helps your germination of this particular variety. Also verify the quality of the seed you have. If you are successfully germinating other types; perhaps it's worth talking with the company you purchased the seed from.

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