Sunday, 6 December 2015

Bloom event - Prosthechea cochleata x prismatocarpum

I always like random hybrids. I originally got this plant from Ray Creek orchids (and it wasn't cheap, let me tell you!), I can't resist Prosthechea species and hybrids. As P. cochleata is an easy grower and bloomer, I figured 'how hard can the hybrid be, right?' Wrong. It has take me three years to get this plant back to what I consider comparative health and vigour. While I can't say its been on death's door, it has been, for want of a better word, sulking. On receipt, I straight away removed the coconut chip based potting medium that Ray Creek is so fond of and replaced it with my trusty Melcourt bark chips. The plant then produced a new growth, smaller, and bloomed from it. Photos exist, somewhere, probably. The flowers didn't look quite right, but I thought I'd persevere. After more sulking and general teenager like behaviour, the plant then had a truly terrible attack of scale insect. The little buggers are notoriously hard to spot and they do like to hide, so it took a further year of intermittent spraying, swearing and, you guessed it, sulking before finally this year a new growth came up clean, slightly bigger than last year's effort and which produced a healthy flower spike. You see the result in the photo. Definitely worth the wait. Both parents can be seen in here, which I like. All too often one parent dominates over the other, as is often the case with hybrids involving Coelogyne speciosa. The flowers are resupinate, from the prismatocaroa parent, and the purple lip and spotting is from there too. Otherwise, the general flower shape reminds me of a sort of tidier version of P. cochleata. The flower spikes seem very long lived, staying green long (I'm talking months or years) after the flowers have dropped. I'm hoping that this is a precursor to repeat or sequential blooming, a trait displayed by Prosthechea cochleata. Haven't detected a scent yet, but its early days and at least one of its parents is not scented. All in all I think is is a promising plant that doesn't seem to hate me as much now as it once did.

4 comments:

  1. Well done on getting it to flower.I have three prosthecheas and have no luck with them .They produce sheaths but dry up!

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    1. Hi Tina,
      I generally have no problem blooming Prosthechea, once they are big enough I find them to be regular bloomers, usually if I have had sheaths dry up without producing blooms I have repotted or divided plants. Even with dry sheaths, don't give up, I have seen them still bloom the following year.

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    2. Hi Kevin ,what temperature to you grow them at?How much light?

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    3. Hi, Tina,

      Intermediate to warm temperatures, good air movement (provided by an fan). The light is very bright, enough to bloom Cattleyas and Vandas. Remember though, that if you are growing under natural light shade might be required during summer. The growlights do not burn leaves like sunlight does so I can provide much more light than I would otherwise be able to.

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