Cane Girdler on my Therese Bugnet
Comments (7)
strawchicago z5
2 years agolast modified: 2 years agoI got cane-borers on Fast growing & constant blooming Firefighter in its 2rd & 3rd year. I used glue to seal the bore holes, but that didn't help. Then Firefighter died through a dry spring as 3rd-year-own-root. When I dug it up, I found trees' roots invading that area, stealing alkaline minerals (esp. calcium).
In contrast, Big Purple next to my limestone patio never have that problem and lived for 8 years, despite being under the roof-overhang that blocked 80% of rain.
After Firefigher got infected with cane-borers back in 2015 (the only rose among my 147 varieties). I put lots of calcium (gypsum) to break up my rock hard clay. I also top roses with pelletized lime during heavy rain, and no more cane-borers in my garden. Rain leaches out calcium big time, found 1/8 cup of whitish calcium oozing out from the bottom of each pot after week-long rain. Calcium hardens plant tissue.
One time I planted bok-choy vegetable next to my limestone patio and it was INEDIBLE, so tough and fibrous. So I put 6 cups of pelletized lime in the planting hole of each tomato, and zero cracked tomatoes this year, and no tomato worms for the past 20 years of putting calcium in the planting hole & zero chemical fertilizer.
I use pelletized lime with 86% calcium carbonate since my clay is exceedingly high in magnesium, so I stay away from Garden lime (22% calcium and 12% magnesium). Below is Firefighter as 1st year own-root, it's a fasting growing & constant blooming so it used lots of calcium & potassium (got up to 3 feet in its first year as own-root):
Mischievous Magpie (CO 5b)
2 years agoSteven, that's tragic and I'm so sorry. I don't have any experience or advice for you, I'm just really sorry you're going through that with such a beloved plant. The internet says:
So, this could maybe be too radical, but do you think TB would tolerate having a total haircut, to eliminate the eggs and bugs in the canes? And, if any, what the cause of possible plant stress could be? I know you've said you don't give it supplemental water, but maybe a haircut and a big dose of water for the next year would help it regrow and not give off any stress signals? If they're overwintering IN the stem, I'm not sure an oil would work at this point. Maybe next spring though?Related Discussions
Therese Bugnet thorny?
Comments (8)I'm laughing, Barbara, cuz I was just going to write that the new canes are thorny and then it all levels out to a mildly thorny rose. YMMV, as Jeri says. It sure is a beauty of a rose all year long. Whether you plant straight into the garden or not depends on how well-developed the root system is. I wish I could make it simpler, but it's true. If RU grew those roses for a year before you received them, they'll be fine and I'd put them right in the ground while it's cooler. If they've just recently grown up and been shipped early, it could be tough for them to survive and you might want to harden them off for awhile. Whatever you decide to do, they'll both be beautiful roses. Share pictures later!...See MoreTherese Bugnet!!! Yay yay yay!
Comments (5)I agree about the foliage -it is not at all typical of rugosas, as it is softer, and a lighter green. This was one of my first roses, from Wayside back in the late 80's. It was planted in the wrong place, and I planted it too deep. The wrong place, because it was not only a rocky poor soil spot, but too far from the house to enjoy. But the too deep worked in its favor - about 12 years ago it suckered out a baby, which I gave to a friend. The rose survived a rose cane borer attack in 2000 that knocked out most of my rugosa hybrids, but except for cutting back the dead stuff I ignored it. No fertilizer, nothing. After my husband's death 8 years ago, I totally neglected that end of the yard. Finally getting around to cutting out the weeds and white pine seedlings spring 08, I discovered not just the original, but a second one, growing just a foot away. I used a sharp spade to separate them, potted them each up in big pots (huge root systems on each of them) cut them back to about 18", and moved them up to the house, on the deck where I could water them. They took off. Last year they were put into the new rose garden, on either side of the stone path up to the house....See MoreImpressed with Therese Bugnet rebloom
Comments (14)Mine's 15 years old and has traveled off its rootstock. I never got more than a couple more blooms after the spring bloom until last year. Started using fish emulsion. I have to say I don't like fish emulsion. Also I poured the water to it. Madame Hardy is next to it and has a reputation as a really stingy bloom producer. This year it is covered with blossoms. I tell you what, that fish emulsion is really disgusting stuff. I got it because all the fertilizer I could find around here had cranked up their percentages until they were just generic Miracle Grow. I think Miracle Grow is just like feeding your toddler Mountain Dew. Along with the Fish emulsion I used a product called Alaska Morbloom. Both products came from this company and had a percentage together of 5-11-11. A lot of the professional rose food has a lower percentage, and I'm guessing is better for the plant, long term....See MoreTherese Bugnet and her little sister Marie
Comments (9)Countryrose, those are some splendid photos. I have both "sisters" growing near one another. Therese is quite prone to attack by rose stem girdler and so she does not get a chance to reach her full potential but is constantly trying to grow new canes to replace the ones I have to prune away; she reaches about 4 ft. maximum. In spite of Therese' lovely reddish canes, my heart goes to Marie. The purity of her white petals is heartbreaking - and those red accented buds! Ahhhh, so beautiful. She is extremely diminutive here, being only about 2' tall. I have to get down on hands and knees to appreciate Marie's beauty and fragrance, growing there at the foot of her sister. If there would be any resistance to deer, BTW, it might be that she's so small they would overlook her in favor of more upright browsing - like Therese! ;-)...See MoreMiGreenThumb (Z5b S.Michigan/Sunset 41) Elevation: 1091 feet
2 years agoMischievous, right about it already being infected.
That's why I'm removing all affected canes and THEN use chemical intervention on the plant. I'm anticipating using a systemic versus topical.
Here's my poor Therese. Not much left of her now...
Steven
rosecanadian
2 years agoMiGreenThumb (Z5b S.Michigan/Sunset 41) Elevation: 1091 feet thanked rosecanadian
Mischievous Magpie (CO 5b)