Austrian Copper Rose is not blooming

Question: I bought an Austrian Copper Rose several years ago (because they are supposed to be hardy) and planted it in a large, well drained plastic barrel pot because we live at an elevation of about 9500 feet and winters get very cold. During the winter months, I move the rose into our garage where it is cold, but above freezing. I water it once a month while in the garage. There are windows, so it gets light and usually in May I put it back outside on our deck in a place where it gets full sun. Except for last year, I did prune it, but thought I'll leave it alone last winter to see if that makes a difference. Every year it is growing and getting new leaves, but no blooms. I bought Jobes Organic Knock out Rose Granular Plant food to feed it, but that has not done a thing either. Can you give me any advice why the rose might not bloom? I had bought one many years ago and left it outside, but it did not make it.This one just made it through a late spring storm and was buried in snow for a few days.

responder: An Ask Extension Expert Replied May 22, 2023, 5:41 PM EDT
response: Silvia,   Thank you for your question and your picture.   What are the dimensions of the pot?

responder: The Question Asker Replied May 22, 2023, 6:49 PM EDT
response: It is round. 20 inches in diameter and 2 feet deep. Silvia German yuccacreekstudios.etsy.com - give a timeless gift of or delight yourself with my affordable, unique, original oil paintings or prints. Free shipping within the US.On Mon, May 22, 2023 at 3:41 PM Ask Extension <<personal data hidden>> wrote:

responder: An Ask Extension Expert Replied May 24, 2023, 10:33 AM EDT
response: Thank you for your response.  Austrian Copper rose is not considered a rose for container gardening. We suspect that it may have bloomed in previous years having enough room for it's roots. Now it is not "happy" in the container. You may want to consider planting it in the ground.   According to Texas A&M here are a few roses that are best suited for containers (before choosing one make sure it's also compatible to our Colorado weather) :  Movable roses should be the shorter-growing varieties of the modern-day hybrid roses as they are more compact with great quantities of flowers all summer. Good selections are: New YearShowbizImpatientIntrigueSun FlareMon CheriMarinaCharismaFirst EditionCathedralBahiaElectronRedgoldGene BoernerAngel FaceEuropeanaGarden PartySarabandeIvory Fashion Containers can be any shape - - round, or hexagonal - - as long as they are 18 inches across and 14 inches deep for proper root development (except for minis, which can grow in smaller containers). Use pots made of plastic, clay, terra cotta, ceramic, metal, or wood. All they need to be effective is drainage at the bottom. If you're working with a planter that does not have drainage holes, add a thick layer of gravel at the bottom of the container so the roots do not become waterlogged. Pots can be heavy and difficult to move about, so casters are an excellent addition. All roses need at least six hours of sun a day; ideally place movable roses where they receive morning sun and some protection form the midday heat. Also try to keep them out of drying winds. If the plants receive uneven sun and start growing in one direction to reach the light, rotate them often to keep growth straight. Roses in containers will need more water than the same roses in the ground. Not only are all sides of the container subject to drying sun and winds, there is also no ground water to fall back upon. Watch planters carefully and water whenever the growing medium starts to dry out. Water until moisture runs from the bottom of the container. A mulch on top of the planter will help keep the roots of the roses moist and cool. Planting medium for containers should be rich and well drained. A packaged or homemade mix of half organic matter, such as peat moss or compost, and half perlite or vermiculite is ideal. As roses in pots must be watered so often, they must also be fertilized frequently. Feed each week with soluble fertilizer at one-quarter strength for even growth and flowering. When winter comes, move the pots into an unheated but frost- free area, keep the soil slightly moist, cover with plastic, and return to the outdoors in spring.  Please do not hesitate to contact us with further questions.

responder: The Question Asker Replied May 24, 2023, 5:52 PM EDT
response: Thank you. When I bought it from a gardening center it was a much smaller plant in a much smaller pot. So at least for the first years it had much more room in our container. I know it is hardy, but was afraid our winters might kill it. I can try replanting it outside and go with one of the varieties you suggested. Is there a way to protect it through the winter? We live in CO in the Rockies at about 9500 feet and sometimes it gets really cold like below 0 degrees F. Silvia German yuccacreekstudios.etsy.com - give a timeless gift of or delight yourself with my affordable, unique, original oil paintings or prints. Free shipping within the US.On Wed, May 24, 2023 at 8:33 AM Ask Extension <<personal data hidden>> wrote:

responder: The Question Asker Replied June 02, 2023, 7:36 PM EDT
response: Still waiting for some advice on how to protect it in the winter. Thank you. Silvia German yuccacreekstudios.etsy.com - give a timeless gift of or delight yourself with my affordable, unique, original oil paintings or prints. Free shipping within the US.On Wed, May 24, 2023 at 3:46 PM Silvia German <<personal data hidden>> wrote:Thank you. When I bought it from a gardening center it was a much smaller plant in a much smaller pot. So at least for the first years it had much more room in our container. I know it is hardy, but was afraid our winters might kill it. I can try replanting it outside and go with one of the varieties you suggested. Is there a way to protect it through the winter? We live in CO in the Rockies at about 9500 feet and sometimes it gets really cold like below 0 degrees F.Silvia German yuccacreekstudios.etsy.com - give a timeless gift of or delight yourself with my affordable, unique, original oil paintings or prints. Free shipping within the US.On Wed, May 24, 2023 at 8:33 AM Ask Extension <<personal data hidden>> wrote:

responder: An Ask Extension Expert Replied June 05, 2023, 10:12 AM EDT
response: Silvia,   In pots: When winter comes, move the pots into an unheated but frost- free area, keep the soil slightly moist, cover with plastic, and return to the outdoors in spring.  In ground: Colorado State University has provided this link below regarding rose winter care.   https://planttalk.colostate.edu/topics/trees-shrubs-vines/1726-roses-winter-care/

responder: The Question Asker Replied June 05, 2023, 3:26 PM EDT
response: Thank you so much! Silvia German yuccacreekstudios.etsy.com - give a timeless gift of or delight yourself with my affordable, unique, original oil paintings or prints. Free shipping within the US.On Mon, Jun 5, 2023 at 8:12 AM Ask Extension <<personal data hidden>> wrote: