Answer: Your Angel's Hair will eventually develop a woody stem if it is left unpruned. The stem will be bare, with feathery foliage at the top. To avoid this, prune it back a few inches every 3-4 months to encourage fresh new growth. If you do this regularly, it will always have fresh foliage and you can control its size.
If you decide to plant it in the ground, you can dig and divide it every 2-3 years. Each division will grow into a mound. Again, as long as you trim a few inches of foliage back every few months, it will always have fresh-looking leaves and will not develop a bare woody stem - at least not for many years.
Hope this answers all your questions!
Q&A Library Searching Tips