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Questions, Answers and Comments by Category
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I don't know the name of this daisy (planted in an "English cottage-style" garden by previous owners) but does anyone know if it is hostile / allelopathic to roses? It seems to me that there's more going on than competition for resources. Anyway it's coming out.
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#1 of 2 posted
4 APR 23 by
 Lee H.
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Why Margaret, that is obviously Osteospermum ecklonis, also known as Cape marguerite, African daisy, Van Staden's river daisy, Sundays river daisy, white daisy bush, blue-and-white daisy bush, star of the veldt is an ornamental plant that is native to South Africa. It is now regarded as a weed in parts of Australia, particularly Victoria and Western Australia.
And you too can sound this smart if you have the Picture This app, and a photograph of the plant :-)
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Thank you! Trust the previous owners to plant a weed - they also planted Agapanthus.
I know about iNaturalist (they told me my tiny never-before-noticed beetles weren't beetles, but nymphs of the redbug pest).
Also the frog-listening app.
Aren't computers wonderful- when they work.
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Depth to plant grafted roses? I have repeatedly read to plant the graft above the soil. Now to day I read from a prominant, respected rose grower/seller, to plant graft 2 " below the soil? Then I read an article here where a very highly respected rose expert says that nothing with roses is certain. They live to bewilder us. LOL! I'm beginning to believe that. So I'm very novice compared to most of you folks but would welcome any opinions/comments, etc.
Thank you, Jeri
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Seek local advice.
This depends on personal preference, climate and soil conditions.
If you garden in a colder climate, conventional wisdom is to bury them.
Keep in mind, not all roses are budded.
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And this, too: if the rose is one that will sucker on its own roots, I wouldn't put the bud union in the soil.
For those that don't, I think giving the scion (the top part) a chance to make its own roots, by putting the bud union below the soil, gives it more chance of coming back after fire, line-trimmers, bounding dogs etc.
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Good point Margaret.
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I believe you said you are in Portland, OR - thus you don't experience much freezing weather. I would recommend you plant the bud union right at ground level or a smidge above. Usually, the plant will sink down a tad over time so that would result in a good depth. There is more than one way to skin a cat but for me, in zone 5b, roses planted with the bud union too deep don't seem to grow as well as those with the bud union at or very near ground level. They may be hardier come winter if planted deep, but they just don't seem to grow as well.
That said if you planted just a little above or below ground level - I'm sure everything would work out just fine. Happy planting!
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Initial post
9 SEP 21
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* This post deleted by user *
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#1 of 6 posted
9 SEP 21 by
HubertG
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Some types of mulches, especially barks, draw nitrogen from the surrounding soil when they break down, so the nitrogen goes to the mulch rather than to the roses. Also, sometimes mulches when applied too thickly can prevent moisture penetration into the soil rather than conserve soil moisture.
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This makes sense, and explains how this began happening soon after we mulched! Thank you so much, will look carefully at the type of mulch I’m buying.
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This makes sense, and explains how this began happening soon after we mulched! Thank you so much, will look carefully at the type of mulch I’m buying.
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I'll just point out that I put down mulch when the plants are dormant late fall or winter. Also I use wood chips that take longer to break down so last several years and enrich the soil.
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#2 of 6 posted
10 SEP 21 by
Lee H.
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My personal experience is when leaves start to yellow and drop: start looking for mites.
I have on one occasion experienced trouble with mulch. It was a Scott product with a weed inhibitor. Killed a nice dogwood with it.
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Thanks I’ll check for mites too, never had an issue with mites but not discounting the possibility this time around. It’s so strange how they dropped on every bush almost simultaneously. Thanks for your input ‘
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You might like to take a look at RESOURCES / GLOSSARY / DOWNY MILDEW. Sudden leaf drop is mentioned there.
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