Software
Houzz Logo Print
captainkelso

Angraecum sesquipedale Leaf Drop. Help!

9 years ago

I bought this from Botanica Ltd. at an orchid show on April 1st here in Spokane, WA. It is hard to say when this began but it did fairly well for maybe a month to a six weeks. Then it began dropping leaves. They would first begin to brown from the base and eventually fall off. I included a picture of the most recent leaf drop and they all looked like that. This has happened to probably about five leaves. The dried up root that is the uppermost root looked like that when I got it, the other one however is very green and actively growing at a pretty fast rate.

In terms of care it was being fertilized at half strength once a week with Jobes organic orchid fertilizer (6-1-1) and occasionally Grow More orchid fertilizer (20-10-20). This was done at the same time as watering. I would first wet the potting mix, let it sit a bit and then pour my fertilizer mixture through the potting mix. I also misted the roots about once a week. It was sitting in front of a west facing window.

I use past tense because I recently changed my regime for this and all my orchids in response to the issue at hand. I now have it in an indoor greenhouse I built myself, this was in an effort to raise the temperature and the humidity. For lighting I have a 36W full spectrum LED about 18" from the plant. I water four-six times a month but only do the half strength fertilizer half the time. I mist the roots as often as I remember, probably every other day.

After I began regime number two the leaf drop seemed to slow in frequency. The most recent drop was today and it has not dropped in over a month. I have done a lot of asking around and reading. The asking around got me to regime number two but clearly I have only slowed the problem. I have read a lot and I have a couple thoughts. I do not think it is the temperature, although fairly constant, it is usually around 75 F in the little greenhouse. It could be humidity, Spokane is considered nearly a desert and misting does not last long. Finally, I wonder if I am watering it enough.

My first question is what am I doing wrong? My second question is if it is too much too late and I am better off just moving on? I am pretty determined and somewhat attached to it so hopefully I can find an answer.

Comments (7)

  • 9 years ago
    last modified: 9 years ago

    This looks incredibly dehydrated. The roots are all withered. I'm in NY, which I believe is slightly more humid (though still not "humid"); I mist the roots of my plants daily. If you are interested in saving it, I would do something drastic, fast. I don't know if you're soaking that pot in a bowl of water at least weekly, but definitely start doing that. Perhaps you can repot in a more moisture-retaining mix, or heap a whole lot of sphag around the base of the plant to keep the moisture in that plant? You may even consider the sphag and bag method to try and trigger more root growth. Keep the base bagged for a few days, then give it a day to breath, then put the bag back on. It might not be enough, but there's still a possibility of saving it, I think. You've just got to get more humidity around those root. Good luck!

  • 9 years ago

    I agree that it looks very dehydrated. I'd definitely add some sphag to the top and water much more frequently. If the bark is dry, water it.

  • 9 years ago

    I was figuring the answer was water related. Thank you. So in order to do the sphag and bag I would need to take it out of the pot. Is that worth the stress on the plant? Should I put the moss around the base of the stem where the previous leaves fell off or will that rot it?

  • 9 years ago

    Keep in mind that almost any plant will drop leaves when first moved into a new environment. You said the plant has stabilized so you might be over correcting.

  • 9 years ago
    last modified: 9 years ago

    Looks fine to me. Angraecum are slow to react. Mine took months to start growth after I got it. And your roots look just like mine, and the leaves look very plump.

    Do not unpot. Angraecum do not like having their roots disturbed, and have been known to die if it's too violent.

    Id say your best bet is to do nothing. This particular species thrives on a stabile routine and it sounds like you keep changing things on it. Oh, and wait for Jane to chime in - she's the local expert.

  • 9 years ago

    One other thing. This is a vanda-alliance plant. Too much water on the roots and they will rot. Mine grows in a hanging pot, in some chunks of big lava rock. And im still wary of over watering.

    once the roots age and shrivel I don't think they plump out again. They harden in order to keep the plant stable.

0
Sponsored
Peabody Landscape Group
Average rating: 3.5 out of 5 stars8 Reviews
Columbus' Reliable Landscape Design & Contracting