Hoya potting mix
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Hoya potting mix

This is a first post about Hoya species on my blog. I’m still not comfortable with growing Hoyas, but after over 1,5 year I can at least tell you what kind of potting mix has worked for me so far. I’ve tried a lot of combinations, since I’ve bought a lot of cuttings last year and I had the material to experiment on. Unfortunately not everything worked, but hey, this is how we learn, yes?

Part of my Hoyas grow in Lechuza PON and not all of them like it, so I will be moving the fussy ones into the potting mix that I describe below.

Hoya potting mix

keep it airy

My basic potting mix contains:

  • coco fiber 40%
  • perlite 40%
  • peat based soil 20%

Enriched mix that I’ve used over the winter contains of:

  • coco fiber 40%
  • perlite 35%
  • peat based soil mix 20%
  • seramis 4%
  • fine charcoal 1%

This mix is very airy, but at the same time there is enough soil, to kind of “keep it together”. The mix doesn’t dry so fast and thanks to perlite and seramis the water retention is fairly high. Both of those ingredients provide the roots with better access to water and oxygen, preventing overwatering and suffocating the roots. You have to keep in mind though, that everything depends on the average temperature, humidity and the planter that the hoya is in. I strongly encourage you to modify the amount of ingredients in this mixture depending on the conditions you have at your apartment. I will talk briefly about the relationship between the type of pot and the composition of the substrate.

Pots for Hoyas

keep it small

The rule is simple, the more airy the substrate, the less porous pot you can try. As it is all about the airflow in the roots, try to ensure the greatest possible air flow while maintaining the comfort of frequency of watering for yourself. Of course, very airy mixtures dry quickly. It is better to make a heavier mix than to dry the plant and then pour water over it. It’s a simple path to root rot.

For example, if you choose terracotta and a light mix with a small plant (meaning small pot), then you are about to water them every day. Take that into account. Therefore..small plants are oddly…safer in ceramics or even plastic with a light enough mix for them to develop some stron roots.

As to the size. Hoyas are climbers, and they have very fine soil roots. Therefore they really don’t like to be in a big pots. I always try to keep it (reasonably) small. Meaning – a size smaller that I would give to Alocasia for example.

I think that is it for the basics of growing this species. Tell me what do you use in your Hoya mix in the comments on instagram and here!

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