.

Then, is Liatris spicata invasive?

Purple loosestrife is a perennial invasive plant that was introduced to North America from Europe via seeds in ships' ballast. It is considered a serious threat to these habitats, because once it becomes established, it quickly displaces native species and reduces overall plant and animal diversity.

Secondly, how long does it take for Liatris to grow? about 70 to 90 days

Regarding this, do blazing stars spread?

Blazing Star grows from corms or tuberous roots and it doesn't tolerate wet feet. Plant Blazing Star 2 to 3 feet apart. The plant spreads slowly, but eventually becomes 3 to 5 feet wide. One plant is usually enough for most garden spaces.

How do you propagate Liatris?

Liatris Propagation Split the corms of the plants in the fall. Dig them up after your first freeze and pick off any small corms that are clinging to the mother corm. Store the divided corms in a cool area and then replant the following spring.