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- Q.Replanting Knockout Roses. - My 6 Knockout Rose bushes has a " Virus ", Leaves and flowers shriveled up, and spreading to the healthy ...
- Q.There Are Small (2mm) Round, Black, Disc-like Objects Which Seem To Be Attached To The Leaves Of My Knockout Roses By A Very Fine - single filament. What are they and how do I get rid of them? They have just appeared in the last ...
- Q.Should I Replace With Another Knockout Rose? - We have 4-5 knockout roses facing west at our north Mississippi home. One has been replaced twice due to ...
- Q.Can I Plant These In The Ground In November - My husband bought a rack of plants from Lowe's, end of season clearance. I need to know if I can ...
- Q.WILL KNOCK OUT ROSES COME BACK , THEY WERE CUT TO 4 “, FROM 5 FEET, MY FRIEND CUT THEM - NO PICTURES
- Q.I Have Four Knock Out Rose Bushes Planted In My Front. All Get Same Amount Of Sun, Fertilization Etc. The Ones On The Ends Do Gr - eat, but the ones in the middle grow out and not up and stay small.
- Q.I Have Spots/discoloration On My Knockout Roses And On My Butterfly Bush. - I planted about 3 weeks ago. I had the soil tested and amended it per my garden center's instructions. I ...
Asked by
BEEGEE on
July 23, 2019
60126Q.Replanting Knockout Roses.
My 6 Knockout Rose bushes has a " Virus ", Leaves and flowers shriveled up, and spreading to the healthy plants as well. I dug them up and got rid of them. When can I replant knockout roses ?. Will the harsh Chicago winters Kill the virus, so I can plant next spring ?. What do I do to prevent this from recurring ?
- Answered by
roseman on
July 23, 2019A.So sorry to hear this. If it truly is rose rosette disease, there is not much one can do. If you dig out the soils in the area of each rosebush about 30 inches in diameter by at least 18 inches deep, sort out all the root matter you can, then mix with a good bagged garden soil with mulch in it. You should be able to replant whenever you are ready to. I will provide you a link on some rose rosette information as well. Link: https://roserosette.org/
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- Asked by
Anonymous on
August 6, 2019Q.There are small (2mm) round, black, disc-like objects which seem to be attached to the leaves of my knockout roses by a very fine
single filament. What are they and how do I get rid of them? They have just appeared in the last week and are not on any other plants that I have seen. I live in Charleston, SC.
Answered by
GKH_Susan on
August 7, 2019
Certified ExpertA.It could be scale on your roses. Other sap suckers are aphids, mites, and thrips. Use an insecticidal soap to zap them. Scale are more difficult when they are in the hard shell phase, as the armor protects them. Here's how to control scale:
https://www.gardeningknowhow.com/plant-problems/pests/insects/control-plant-scale.htmWas this answer useful?00- Asked by
Anonymous on
October 23, 2019Q.Should I replace with another knockout rose?
We have 4-5 knockout roses facing west at our north Mississippi home. One has been replaced twice due to disease and dying. Others are fine. Is bad soil to blame? Should we replace again? Pull out all roses and replace with other shrubs? If so, what?
- Answered by
GKH_Susan on
October 24, 2019
Certified ExpertA.It could be that the disease is within the soil and is affecting the new plants. You can solarize the soil where the dying bushes were or plant a different shrub. Often, disease is host specific and won't affect a different plant.
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Anonymous on
November 11, 2019Q.Can I plant these in the ground in November
My husband bought a rack of plants from Lowe's, end of season clearance. I need to know if I can plant these in the ground now with it being November. I have 2 knock out rose bushes and 2 gulf stream nandina (nandina domestica "gulf stream ") plants
- Answered by
GKH_Susan on
November 11, 2019
Certified ExpertA.Yes, you can go ahead and plant those now since they are in containers. You shouldn't have any really cold weather till about January. Be sure to keep them watered till they get established. Here are more tips about planting roses. Knock Outs are easy care and can be cut back by about half each year in spring after the last frost.
https://www.gardeningknowhow.com/ornamental/flowers/roses/planting-rose-bushes-in-the-fall.htm
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Anonymous on
April 4, 2020 - Answered by
GKH_Susan on
April 5, 2020
Certified ExpertA.Your Knock Out rosebushes should recover just fine. I would water them with some water that has both a product called Super Thrive and a root stimulator mixed into it. Water them with a fresh batch of this mix the next 4 to 5 times they need watering. It will help them come back nicely and with vigor.
In the future, just cut them back by about 1/2 in early spring.
Was this answer useful?00 - Asked by
bernardfive5 on
April 22, 2020
49002Q.I Have Four Knock Out Rose Bushes Planted In My Front. All Get Same Amount Of Sun, Fertilization Etc. The Ones On The Ends Do Gr
eat, but the ones in the middle grow out and not up and stay small.
- Answered by
roseman on
April 25, 2020A.I do not know how closely together your rosebushes are planted, however they could be planted too closely together. Thus the outer ones get better sunshine and better access to water and nutrients. Here is an article on spacing or rosebushes for you: https://www.gardeningknowhow.com/ornamental/flowers/roses/spacing-roses.htm
There could be something off about the pH level of the center soils that is not allowing the root systems to take up the nutrients they need too. Do some pH testing to check this out.Was this answer useful?00 - Asked by
Anonymous on
May 2, 2020Q.I have spots/discoloration on my knockout roses and on my butterfly bush.
I planted about 3 weeks ago. I had the soil tested and amended it per my garden center's instructions. I applied the Bayer advanced rose and flower care product to it 2 weeks after planting.
- Answered by
GKH_Susan on
May 4, 2020
Certified ExpertA.Newly planted Knock Outs don't need fertilizer right away, if at all. According to the Knock Out website, if you choose to fertilize, wait till at least one bloom cycle has concluded. Butterfly bushes don't need fertilization either unless planted in poor soil. Compost added to the soil benefits them.
They may have gotten a little too much attention right away. If it's a fungus, just be sure to pick up any fallen leaves and throw away in trash.
https://www.gardeningknowhow.com/ornamental/shrubs/butterfly-bush/butterfly-bush-care.htm
https://www.gardeningknowhow.com/ornamental/flowers/knockout-roses/care-knockout-roses.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/fertilizer-burn-in-gardens.htmWas this answer useful?00
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