I just planted my purple fountain grass in a large pot. The ends of the grass look dry and dead. Any ideas for me? They were planted a couple of weeks ago. Some of the grass looks brown and dead but the other half is still purple. I'm worried it will die. I live in central Utah.
Did the plant experience a cold spell after watering?
Did the pot receive adequate water?
Watering is most likely the issue for a newly planted pot.
You could try trimming back the part of the plant that appears dry.
If the roots are still alive, your Fountain grass should start to regrow.
Here is a link with more information.
Can I bring my fountain grass indoors or cover it in the late fall? I thought it was a perennial for my region. (Pennistum x advena 'rubrum')
Dig them up and overwinter these plants by placing them in pots and moving them to a cool (not cold) but dry and dark location. Many people use garages, basements or even closets. Let them die back. Water the pots once a month and bring out when you either see new growth or the temps outside average about 50 F. They will grow back after that.
Can you just KEEP purple fountain grass in containers year round or does it HAVE to be ground planted?
Yes, you can grow this ornamental grass in a container as long as it receives adequate drainage and is large enough to accommodate the plant's size. Here is more info on caring for purple fountain grass: https://www.gardeningknowhow.com/ornamental/foliage/purple-fountain-grass/grow-purple-fountain-grass.htm
My purple fountain grass is in a container and getting bigger than I thought it would. Is there a way to trim without a severe pruning?
Fountain Grass can reach heights up to 4 feet and just as wide.
Cutting the grass back to soon could cause water to puddle down into the crown and cause root rot.
I would recommend maybe relocating the pot to a location that the size is less problematic.
Perhaps you could give the plant to someone with the space to grow it.
Here are a few links.
https://www.gardeningknowhow.com/ornamental/foliage/fountain-grass/fountain-grass-pruning.htm
I have planted ornamental grasses the past two years and they have thrived during the summer. I cut them back in early spring. They get southern exposure adjacent to a patio. The first year I had a variegated leaf grass. This past year I planted purple fountain. I know that they are late to sprout, but it is June 19 and I see other ornamental grasses in the area growing well. Time to replace? Is there a more hardy grass that you would suggest for southeastern Wisconsin?
Yes, it is dead. Purple fountain grass is not hardy for your area.
This article has some alternatives you can consider:
http://www.walterreeves.com/gardening-q-and-a/alternatives-purple-fountain-grass/
I trimmed my purple fountain grass last fall and now it's not coming up (June). Will it still come up and when? Is there anything I can do to help it come up? I have 4 of them that haven't started yet.
These generally begin new growth in late spring to early summer. Could be that temps have not gotten warm enough yet for yours to emerge. Be patient. However, here is an article to help you determine if it is dead or just on a slow start: https://www.gardeningknowhow.com/plant-problems/environmental/how-to-tell-if-a-plant-is-dead-and-how-to-recover-an-almost-dead-plant.htm
Can you propagate Purple Fountain grass by the little offshoots that look like spider plant offshoots? I have numerous purple fountain grasses doing nicely but I know they will not survive our winters (past experience and we live in Maryland). I've read about the various procedures for propagating them indoors over the winter months. But I can't find any mention as to whether or not it's possible to propagate them by cutting off the existing above ground offshoots (that look much like the offshoots from a spider plant). These offshoots already have little nodules that look like roots, and then putting them in water until more roots form, and then planting them in pots inside so they can spend the winter in the basement. Can I propagate from these offshoots?
You can start new plants from division of the off shoots.
Here are a few links with more information.
https://www.gardeningknowhow.com/ornamental/foliage/purple-fountain-grass/grow-purple-fountain-grass.htm
http://www.ces.ncsu.edu/depts/hort/floriculture/RR/ornamental_grasses/ornamental_grasses.htm