Planted Tank Guru
Join Date: Mar 2009
Location: Madison, Wisconsin
For scale you can also try to drown them by dunking the whole plant underwater. If you repeat this a few times you can knock them down quite a bit. The Ruellia can handle being submerged for a whole day or two.
Those seeds from the Ruellia are very easy to sprout and the seedlings grow pretty fast. You can start them right in a riparium planter or in regular potting soil.