cactus-food

Cactus Food on Your Breakfast Table

Everybody knows that cactuses are prickly. However, the fact that they are also an important source of food is far less popular. Stems, fruits and seeds of cactus have been have been More »

fear-and-loathing-cactus

Psychedelic Cactus Adventure

We are human beings and, as the Eden’s incident proves it, it’s typical for all of us to cherish a desire for something forbidden and adventurous within. How about growing a plant More »

mountain-cacti-big

Mountain cacti

Have you ever been to or have you ever seen the pictures of the Andes or the Cordilleras? These are the places of such cactus types as astrophytum, cleistocactus, echinopsis, lobivia, notocactus, More »

Prickly-pear-cactus

Did you know these prickly things?

We all got used to cactuses as original and beautiful houseplants. So when we hear the word “cactus” we usually think of those natty prickly green things in small pots on our More »

saguaro-cactus

Taking care of saguaro cactus

When you hear the word “saguaro” you probably imagine a large, tree-sized cactus with a mighty ribbed stalk that grows in the Caribbee coastwise. I also once thought that all representatives of More »

Tag Archives: taking care of cactus

Seashore cacti

Here belong such cactus species as melocactus, copiapoa and some others. This time I’m going to tell you about one of them.

Types of cactus: melocactus matanzanusGrowing just by the sea, very close to the surfs, such types of cactus as melocacti are sometimes washed and taken away by the water. You can find them along warm coast of Mexico, Guatemala, Venezuela, Cuba, but most of these cactus types grow on the islands of West Indies. One legend says that the first melocacti come exactly from those places. Caught from the sea by sailors, they quickly spread in Europe.

As a matter of fact, melocactus was one of the first cacti got to Europe and described in botanical books.

The roots of seashore cacti extend far under the surface of sand ground to gather more fresh rainwater. All year long these cacti need warmth (about 20°C) and humid air; therefore it’s extremely difficult to grow them as houseplants. They prefer mainly sand soil with an admixture of loam and humus, and they can’t bear alkalic soil.

Watering different types of cactus plants

It goes without saying that every type of cactus needs an individual approach. So in order to water your cactuses properly, you should take into account a number of factors. But all in all, the following cactuses require more watering:

1. Hygrophilous cactuses
2. Growing cactuses
3. Cactuses with big roots
4. Cactuses in earthenware pots
5. Cactuses in sandy soil
6. Cactuses kept in high temperature and dry air

And, on the contrary, you should be careful with watering of these cactuses:

1. Xerophilous cactuses
2. Cactuses that are at rest
3. Cactuses with small roots
4. Cactuses that are grown in plastic pots
5. Cactuses clay soil
6. Cactuses kept in low temperature and humid air

In summer I water my cacti just like the other houseplants – just when the soil gets dry, except cool rainy days. In autumn watering should be reduced gradually, and in winter it should be stopped at all – to make dry and cold wintering for your prickly friends.

It’s better to use rainwater, but you can use tap water settled for a day or two. It must be warm – about 30-40 C°. If you put a hand in water with such temperature, you will feel neither warmth nor cold. I seldom use water of room temperature, especially when it’s cool outside. The fact is that cactus roots can’t absorb water, which temperature is lower than 10-12 C°. If it’s about 20 C° in the room, the soil in the pot is colder. The temperature of the water you poured out on this soil slumps. And a cold, moist soil is extremely dangerous for cactus roots.

The best time for watering is in the evening in summer and in the morning in winter. The water should not get on the stalk of the cactus plant, watch it carefully. And remember that every cactus can bear lack of water, but its excess could be baneful.

On the other hand, a lot of cacti suffer just from water shortage in hot summer days: many collectors don’t know that cactus absorbs only a few percents of water together with nutrients dissolved in it. The rest of water is used for the cooling of the stalk through evaporation to protect it from overheating. Water shortage in hot summer period is very harmful.

Hot days and cool dewy nights are typical for the most regions of America where cacti grow. Dew and fog can be replaced by spraying, that has an excellent effect, if you meet some simple conditions. For my collection I stick to these rules:

1. Never spray cactus, if the weather is cool and damp – the stalk may begin to rot.
2. Use a small sprayer that pulverizes water to fog, but not to big drops.
3. Use only boiled and hot water, because its temperature stumps during spraying.
4. Hygrophilous cacti that have leaves, for example Christmas cactus, like not only sprinkling, but also warm shower. It’s undesirable to spray your cactus late at night because of a quick temperature drop.

Potting cactus in proper soil

Potting different types of cactus in proper soilDifferent types of cactus plants are quite exacting to the container they grows in. The size of the pot must correspond to the rootage of the plant. If roots are long and have a main spur, then you should choose a deep and narrow pot. If the roots are developed better in the topping and they are not very long, the pot must be wide and shallow. Growth peculiarities should be taken into account as well. For example, mammillaria generates a lot of bulbils in one pot, so you should choose a wide and rather shallow pot. It’s a matter of taste to choose what the pot is made of. I grow my cacti in square plastic pots standing on the trail. The soil in such pots dries up less quickly than in the earthenware. The drain ports and a drainage layer are indispensable conditions for all the sorts of containers where you grow cacti: they can’t bear water stagnation near their roots. Another advantage of plastic pots is that they warm up slightly in the sun, but retain the warmth after sunset for a long time. Besides, thanks to their square form they take half place on the windowpane.

While preparing the soil mixture for your cacti you should keep in mind one rule: soil must be coarse-grained and loose, spongy and absorbent, but it must not contain any organic fertilizer like manure, droppings or sawdust.

Organic fertilizers are rich in nitrogen, and cactus need in nitrogen is very scanty because of their physical nature. Even a little excess of nitrogen can lead to fatal consequences: the stalk grows rapidly, gets friable and watery. Fuzz and thorns grow weak and many sprouts and bulbils don’t develop to healthy plants. The skin bursts and it leaves ugly scars. These surfeited cactus plants die easily of any infection.

Making soil for cactusFor my collection I prepare the following mixture: leaf mold, clay soil, coarse sand, charcoal and broken brick (2:2:2:1) mixed with one teaspoon of slack lime and superphosphate. Leaf mold is rich in nutrients that are necessary for succulents. Moreover it’s friable and light and absorbs water well. It dries up quickly and prevents water stagnation in the pot. Clay soil (or garden loam) retains water and dissolved nutritive salts perfectly. Its tenacity and thickness plays a large role by planting of high and big cacti. Coarse sand makes the soil loose and porous. It’s an obligatory component of the soil for all cactus plants. Charcoal has an antiputrefactive action. Broken brick is of double importance. First, it’s pieces make the soil porous. Second, it’s very hygroscopic and absorbs superfluous water. Slack lime is necessary for the right metabolism and normal assimilation of nutrients. Superphosphate acidifies the soil, which is very useful for cacti.

Hope my tips will be of use for you and your prickly cactus friends. I’ll write about how to water different types of cactus next time.

See you soon here!