I am constantly flummoxed as to why I struggle to grow some Hoyas that I used to grow easily in my last home. The only thing that I can really come up with is the water. I was on a tiny community well that serviced about 35 homes, and the only thing added to that water was chlorine. Large commercial water systems like the one that I am on now no longer use chlorine, but moved some time ago to chloramine which does not dissipate quickly like chlorine. I do not believe that my r/o system can filter it out either. I am wondering if some Hoyas are sensitive to it, and possibly the chemical is causing some of my issues.

I have just installed a rain barrel pictured below, and in a short time already have over 100 gallons of water saved. I will report back on how this works out for me at some future time. Fingers crossed!

Being outside in the greenhouse seems to agree with Hoya hanhiae Yellow-Pink this summer as you can seem from the massive flower output!

I started a number of Hoya sp. Buntok (SLM-01) cuttings some of which took and others of which did not. This one surprised the heck out of me by growing a peduncle and flowering. Hoyas never lose their ability to surprise!

All good things must once again come to an end and so it goes with this wonderful and in my opinion much more hardy clone of Hoya undulata. If I was going to try to grow this plant, I would definitely try to seek out this particular one as it just seems much more hardy than the wavy leaved Borneo version.

I have never been able to get any plant grown using leca and passive hydro to last much longer than one year before succumbing to root rot. It requires constant flushing of the media to keep ahead of it, which is way too much work especially when you have most of your plants growing in tents, which make the plants hard to access. I have seen some gorgeous Hoyas grown in leca on Instagram, but I cannot seem to achieve the same results, and it is maddening. So while it worked out in the case of this undulata, I can hardly recommend it as a main course of growing.

The buds seemed to take forever to open but they finally opened on July 5th. There were five flowers with no scent, but with a great deal of beauty. I was pretty happy that I got this plant to flower within one year of owning it.

Despite my best attempts to prevent root rot, I did observe some rot in March or April, I pulled off as much of it as I could get at and used high pressure water to flush the leca of as many impurities as I could. I then saw that the growing tip died back, and thought well, here we go again, but surprisingly soon after the tip died back, it put on a peduncle near the end of the vine and actually started budding up!

The plant went through the autumn and winter of 2020/2021 with slow but steady growth, sending up a vine in February. I was so afraid of root rot that I kept very little water in the reservoir letting the leca slightly dry out between waterings, which I flushed with a high pressure hose after every watering.

I had to make a decision on how to grow the plant after it arrived. It was rooted in coconut husk, and I opted to go with leca using the semi or passive hydro method of growing it. The only reason I chose that method was that I had killed Hoya undulata growing it in normal mixes. After a month, it still had not died so I felt maybe I had a chance at keeping it alive for a while!

Mandy Lin who is a fantastic grower in California sent me a different clone of Hoya undulata which I did not know existed prior to her telling me about it. I suffered so much trying to grow this plant that I was not even that excited to receive it, thinking that I would probably kill it.