The good news for Hoya Lacunosa is that it is a plant that doesn’t need to be watered too often. It’s not as drought tolerant as a cactus but compared to a Calathea or Peace Lily you won’t have to water your plant that often.
Take a look at a quick guide for caring for your Hoya Lacunosa.
Rather than using a definite time like every week or once a fortnight, it’s better to learn how to read your plant and react to it when it needs watering as the length of time between waterings will vary depending on the time of year. During the winter months you may find that you need to water your Hoya Lacunosa less than during the summer.
You want to allow the top two inches of soil to dry out in between waterings and then give your Hoya a thorough watering. Make sure the pot that it is planted in has drainage holes so that the soil isn’t left with excess water. It’s also important to use a loose well draining potting mix again so that the roots of your plant aren’t sitting in soggy soil.
If you find it difficult to gauge when the soil is no longer wet then try using a moisture meter. A moisture meter works by sticking two metal probes into the soil to detect the level of moisture. It then gives you a reading that usually falls between 1 and 10. We would recommend you watering your plant when it’s moisture is reading around 3.
Eventually you should be able to tell whether your plant needs watering or not by picking up the pot and feeling how heavy it is, but for now don’t worry about using the help of a moisture stick or your fingers to know when your plant needs watering.