Watering and Feeding
Between waterings, allow the soil mix to become completely dry. Don’t expose the plant to prolonged dampness or let it sit in water for long periods. For feeding, fertilize the plant with a cactus fertilizer mix during the growing seasons. In the dormant winter period, suspend the feeding as well.
Herein, how much sun does a Mammillaria cactus need?
Generally speaking, Mammillaria hahniana needs approximately 4-6 hours of sunlight a day to thrive. If you can’t provide adequate sunlight indoors no matter where you place the plant, consider using a grow light. Grow lights can help supplement the lighting needs of your plant, particularly during dark, rainy days.
One may also ask, why is my cactus turning yellow at the bottom?
When there is yellowing from the bottom and the plant feels soft and mushy, the damage to the plant is more severe. The plant is rotting from the roots. The most common cause for this is overwatering, or the plant has been exposed to extreme cold, or extreme heat, or all of the above.
How do you water mammillaria?
Watering and nutrients
Wait for the soil that surrounds your Mammillaria plant to become dry. When that happens, you can water the plant until you soak the first few inches of the soil. If you are struggling to set an effective watering schedule based on those means, watering once per month is a good approach.
Water thimble cactus sparingly during the summer. Throughout the winter months, water only if the cactus looks wilted. Always allow the soil to dry between each watering. The cactus is likely to rot very quickly in soggy soil.
Repot every two or three years into a slightly larger pot. Make sure the soil is dry before repotting. The best time to repot a Mammillaria is late winter or early spring, but the repotting process can be done almost any time of the year. Do not water for a week or so after repotting to reduce the risk of root rot.
Mammillaria cactus varieties can span sizes from one inch in diameter (2.5 cm.) to one foot in height (30 cm.). The majority of the readily available species are the ground hugging variety. As interior plants, growing Mammillaria couldn’t be easier. They need well-draining soil, good light and warm temperatures.
If it is needed, repot the plant during a warm season. Before transplanting make sure the soil is dry. Remove the pot, knock away old soil from roots and remove dead or rotted roots. Use a fungicide to treat cuts and then place the plant into a new pot, filling it with potting soil.
Repot as needed, preferably during the warm season. To repot Mammillaria, make sure the soil is dry before repotting, then gently remove the pot. Knock away the old soil from the roots, making sure to remove any rotted or dead roots in the process. Treat any cuts with a fungicide.