Squarespace V5 Site Server v5.13.156 (http://www.squarespace.com)http://www.raisingbutterflies.org/picture/s-closed_terrarium.jpg?pictureId=3072013<p>Setting up the semi-closed terrarium simply involves placing willows, cottonwoods, or aspen cuttings in bottled water, placing in a 10 gallon or 20 gallon terrarium, and then placing glass on top of that to create this environment.&nbsp; Remove caterpillar frass and replace host plant every week or so.&nbsp; Raise in 24 hours of light once larvae have reached second instar.</p>http://www.raisingbutterflies.org/picture/fridayi_younginstars.jpg?pictureId=3072012<p>Setup in the semi-closed terrarium.&nbsp; Notice the perches on the willow leaves; indicative of young admirals or viceroys.</p>http://www.raisingbutterflies.org/picture/s-closed_terrarium2.jpg?pictureId=3072010http://www.raisingbutterflies.org/picture/ddecker_terrariums.jpg?pictureId=3072011<p>Here is a photo of the semi-closed terrarium stacked two-high;&nbsp;the bottom cage has cottonwoods and the top has&nbsp;sandbar willow.</p>