If you are looking for a unique and low-maintenance plant to add to your cactus collection? Then, look no further than the old man cactus- known as Cephalocereus senilis! This fascinating cactus is also known as the bunny cactus or white Persian cat cactus. 

This slow-growing columnar and erect cactus boasts numerous unbranched stems and can grow up to twenty feet or more in its native habitat. Only the radial spines are visible on its stem, which is covered in woolly grayish-white hairs that resemble an old man's facial hair; it is also known to have survived for over 200 years. These distinct grayish-white hairs serve a dual purpose. In scorching summers, they shield the young cactus from blistering temperatures while providing snug warmth during chilly winters.   

And when springtime arrives, brace yourselves for a breathtaking spectacle! The Old Man Cactus unveils stunning two-inch-long flowers in whitish-pink hues that bloom exclusively under the cover of night – talk about being nocturnally fashionable!

As if that wasn't enough charm already packed into one cactus body, after these ethereal blooms fade away, pinkish-red fruits take their place adorned by delightful yellowish hair. The flowering areoles develop an abundance of wool which confluently forms a dense mass called a pseudocephalium at the top or on one side near the top. 

There are countless tiny sharp yellow modified spines concealed beneath that shaggy coat, ready to prick any unsuspecting intruders who dare to mess with this epic botanical wonder. This hairy cactus can be easily propagated by stem cuttings. Not only is it safe for humans, but it's also friendly to pets! So why wait? 

Watering Needs 

The old Man cactus is a drought-tolerant plant and doesn't require a lot of watering. It's important to let the soil dry out completely between waterings, as overwatering can cause the roots to rot. 

During the summer months, you can water your Old Man cactus once in 2-3 weeks, but during the winter months, you should reduce watering to once a month. When watering, make sure to water the soil directly and avoid getting water on the cactus itself, as this can cause the yellow spines to turn brown and fall off. 

Light Requirements

The old man cactus prefers direct, bright sunlight and can tolerate full sun for most of the day. However, it's important to acclimate the plant to direct sunlight slowly, as sudden exposure to bright light can cause sunburn. 

If your Old man cactus is indoors, make sure to place it near a south-facing window or under a grow light. If this fuzzy cactus isn't getting enough light, it may become leggy, and the yellow spines may turn brown. 

Optimal Soil & Fertilizer Needs 

The old man cactus prefers soil that is well-draining, which means that water can flow through it easily. This is important because the cactus is susceptible to root rot if it sits in water for too long. Cactus or succulent soil mixes are a good choice because they are specifically designed to provide good drainage. If you decide to make your own soil mix, you can use equal parts of sand, perlite, and potting soil. Instead, make or buy a well-draining potting mix, or ideally, use our specialized cactus potting mix that contains 5 natural substrates and mycorrhizae to promote the development of a strong root system that helps your cactus to thrive. 

When it comes to fertilizing the old man cactus, it's important to remember that this plant doesn't require a lot of nutrients. In fact, over-fertilizing can be harmful to this fuzzy cactus. You can fertilize the cactus once a year during the growing season with balanced, NPK (5-10-5) fertilizers. If you notice that your Cephalocereus senilis isn't growing as quickly as you'd like, you can increase the frequency of fertilization, but be careful not to overdo it. 

Hardiness Zone & More 

As desert dwellers, this hairy cactus enjoys hot temperatures. They prefer constant temperatures above 70 degrees Fahrenheit and can tolerate triple digits in the summer, so don't worry if your cactus gets too hot. 

The old man cactus, on the other hand, cannot handle frost, cold, or freezing temperatures, so make sure it doesn't get below 45 degrees Fahrenheit in its environment.  If grown outdoors, this plant grows best in USDA zone 9-11. 

Don't miss out on this opportunity to add something truly exceptional to your garden. Order your very own Cephalocereus senilis - old man cactus today!