I am a novice gardener and have been experimenting for a couple of years. Last year I planted primrose, and by the end of the summer, it had nearly taken over the whole garden. It is so rampant I'm afraid I'll start finding it growing in the front hall. It is choking and covering up all the other plants I have in the same bed. How do I get rid of it? It's everywhere!
Try digging up as much of the root system as you can and be sure to cut flowers off to prevent reseeding.
Dismayed to find something had taken the flower heads off my primroses. They were fine earlier today. The garden is secluded, so it wasn't children. Anyone got any ideas?
How do I mow the lawn without destroying the primroses? There are masses of them this year all over our lawn.
Well, this would be difficult to do. Either remove the primroses from the lawn and transplant elsewhere so you can keep the yard mowed or allow the primroses to stay and forego on the mowing. Of course, if you leave the primroses, you should know that they will just continue to reseed and eventually cover the area. Mowing them down will help keep them under control before they set seed.
We live in the area of Erie, PA near the lake. When can we safely transplant old, large primrose plants?
You are in Hardiness Zones 5a-6a I see. Usually it is best to do the dividing and transplanting in the fall when they have gone dormant. However it can be done in late May as well, usually about a week after Mother's Day. Once you have transplanted them, water them in with some water with a product called Super Thrive in it as well as some root stimulator. This will help with transplant shock and get them going well.
I have some very beautiful primrose and would like to harvest their seeds. These are the large variety. How do I go about this task? Seems that if you have a winner, the seeds will produce the same.
Just cut the spent blooms or seed pods and allow them to dry out some. Then you can place them in a paper bag and leav it in a cool, dry location for planting next season or plant them now.
Do primroses grow tall and will some kind of support help them grow taller?
These plants do get somewhat tall but unless they are falling over, it's not necessary to support them. If you would like to stake them, however, it will not hurt to do so. As far as this helping them to grow taller, plant supports have nothing to do with that. An abundance of nitrogen fertilizer will cause lush growth, though too much will inhibit blooming. I would stick with either a balanced fertilizer or one higher in phosphorus.
What month may I plant primrose? - near Philadelphia, PA.
Usually primrose are planted in the fall or spring. This articvle might help:
https://www.gardeningknowhow.com/ornamental/flowers/primrose/growing-primrose-primrose-plants-in-your-garden.htm