Indigo Spires is a parent plant of Mystic. The only difference that I know of is size. Mystic is supposed to be a smaller plant than the Indigo.

Maybe someone else has more info :).

Kristi

I have them both and I can't tell the difference except the size and that is not always. I read somewhere a while back that Mystic is considered a dwarf, upright form of Indigo Spires
jolana

Jim, it sounds like that exact same way that Indigo Spires behaves. I wonder if your's was mislabeled.

I haven't tried it yet, but my co-worker tried it last summer, and said her's didn't come back this year. She didn't comment on how big it got. She's a horticulturist and a good gardener, so it didn't die of neglect.

Sally

Oops, I forgot to be specific, so what I said may have been confusing. My co-worker tried Mystic Spires last year. We all know that Indigo Spires grows like a weed.

Sally

Thanks for the replies. I'm going to plop those two pots of mystic in my indigo bed this morning. We'll see how they compare shoulder to shoulder :).

I haven't posted to this forum in a couple of years at least. I've been out of the gardening game for quite awhile for several reasons, but the last few weeks I've been picking up my shovel again and trying to repair the damage caused by my neglect. I'm glad to know that this board still exists. I'm also amazed that I remembered my username and password and that they still work.

I thought the primary difference is that Mystic spires has a rather straight bloom, versus the curved bloom spike of Indigo Spires. It is SUPPOSED to be a more upright grower as well. I only have the Indigo,but my daughter has Mystic spires and I do see that difference...not so much height difference but that Mystic has a more vertical growth habit.

Here's the artical describing what the habit of Mysiic Spires is suppose to be.
Jim

Here is a link that might be useful: Mystic Spires Blue