[header] How to grow gaura [title] Sow seeds indoors. [step] Plan on starting the seeds indoors five to nine weeks before the date you intend to transfer the seedlings to your outdoor garden. [substeps] For annual varieties, sow the seeds five to six weeks before the anticipated last frost. 
For perennial varieties, sow the seeds eight to nine weeks before the anticipated last frost. Make sure that the spot you choose indoors can maintain a temperature between 70 and 75 degrees fahrenheit (21 and 24 degrees celsius).