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How to grow lavender from seed
Start the seeds 6 to 12 weeks before warm weather hits.
Lavender seeds can take a while to germinate and should be started early indoors so that they have plenty of time to grow into mature plants during the warm growing season.
Put the seeds through a process called " cold stratifying.
" in this process, seeds should be placed in a sealable plastic bag filled with moist soil. Use a commercial soil specially formulated for starting seeds.