

If you use hard water regularly to water your cacti, you will need to change the compost/medium more often to get rid of buildup minerals. Also, boil it – this will make water softer.

If you don’t have any distilled, reverse-osmosis filtered water or any rainwater, you can use tap water.īut before watering your cacti with tap water, make sure to leave it in an open dish for a day. If you use rainwater for watering your cacti, collect it and use as normal. The measurement will be in ppm (part per million) and any number below 150 is acceptable. You can use a TDS meter like this to check how pure the water is. Try to avoid using tap water, as the minerals do really accumulate in the soil and your cactus might be very sensitive to them. Most reverse-osmosis filters go under the sink and filter the water as well as remove various impurities, making it safer for drinking and watering your cacti! The best water to use for watering your cacti is rainwater, distilled water, or reverse-osmosis filtered water. You can also use a soil meter, which will give you light, moisture and pH readings from the soil. To do so, you can insert a wooden stick in the soil and see if it’s wet. Water evaporation will happen even in winter, so make sure to lower the temperatures indoors.Ĭheck the compost is dry before watering your cactus again. Some owners will advice to stop watering altogether, but your cactus will still need some water to survive. During the winter time (rest period), water your cactus only once a month or so. If your cacti are outdoors, you might need to water them every 5-8 days. During this growth period, water your cacti once in around 7-10 days, but make sure the compost is mostly dry (not fully) before watering again. You will mainly need to water your cacti during its growth period, which lasts from April to September. This is because glazed ceramic, plastic and terracotta pots retain humidity for longer periods than other containers.

In this post, we will talk about how much water cacti need, how often to water cacti, which water to use and the correct watering technique.

While all cacti need different watering frequencies, we will talk about general cacti watering needs. Cactuses are very specific about their watering needs and the way that they need to be watered. Cacti are amazing and unique plants, and they also need a specific watering regime.
