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ROSES - Spring/Summer 2023...

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  • NollieNollie Posts: 7,529
    @Alfie_ it does vary a lot. Some are totally unaffected whereas others struggle depending on a range of factors.. garden position/sun exposure, maturity, heat, humidity etc. Generally blooms are less frequent, smaller, don’t last as long, colour gets washed out or pinks and often blooms fry around the edges. Of the Austins, Munstead Wood, Harlow Carr, Gertrude and now it seems Falstaff are pretty resilient in heat but the yellows and apricots tend to shatter faster.

    It was a surprise to discover tea roses fry and drop a lot of yellowing leaves in hot and humid - they’re supposed to be ideal for hot climates. I also avoid certain classes of roses that reportedly prefer cooler conditions - alba, gallica, moss etc. Damask, portland, bourbon and polyantha seem ok. Hybrid musks are definitely borderline.
    Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
  • Alfie_Alfie_ Posts: 456
    @Nollie - that's interesting about GJ the blooms on mine are much shorter and wither quickly. My roses in partial shade do much better in this heat. Less blooms but much larger and last ages. Most dramatic is a first year Chandos B standard in partial shade (morning only Sun) vs established Chandos shrub in full Sun. The shrub has 70 odd blooms in its first flush but some of them were a quarter of the size of the standard. One of the ones on the standard was about 1.5 times the size of my fist! Bigger than my largest PAoK blooms (and they are big!). Very different colours too - the large blooms on the standard had a lot of pink in them and the shrub in full Sun they were heavy cream colour. I find this bizarre. The Chandos standard blooms in my opinion are by far the best in my garden so far whereas the shrub ones I would rank fairly average. 
  • MarlorenaMarlorena Posts: 8,705
    @Alfie_
    I forgot to answer your question about 'Jude the Obscure'.. I no longer have the rose.. Once I had sniffed it about a thousand times, and got over that, I found the rose wasn't anything special to me.. flimsy petals quickly disintegrate..  gone.. 
    It looked as though it would grow into a vase shape, probably large in time..
    East Anglia, England
  • NollieNollie Posts: 7,529
    That makes perfect sense to me re Chandos, Alfie. Blooms will be larger and have more colour in just morning sun/partial shade, they will be paler and smaller exposed to full sun. As to Gertie, well I guess mine has had a lot longer to acclimatise to high heat - resilience (and bloom count) does improve with maturity, but regardless of age, heavily-petalled Austins here do need good soil and a lot of supplemental water to produce those big voluptuous beauties. Try watering Gertie more deeply/frequently and see if that helps?

    Jason from Fraser Valley did a good youtube vid of the relationship of watering to bloom size and frequency:

    https://www.youtube.com/watch?v=YnM7nbPWEjM
    Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
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