Posted: 30/06/2012 at 09:36
Hello, I'm growing a fair bit from seed but not grown lavender.
Yes they do need to be potted up into bigger pots.
It is advisable put one in each new pot so they have room to develop and then you get more individual plants. Sometimes in the case of wallflowers I do put an extra one in. Depends on how much space I have.
I don't know that much about lavender but my feeling is that they would probably be too small to go out yet and with the current weather.