To thrive, cacti need a sunny location in a compost that is very well-drained, like cactus compost.
Select a windowsill facing south or east for the greatest effects. If the windowsill gets too chilly in the winter, you might need to find them another position.
How to plant cacti
Plant cactus carefully at all times. Your skin may sting and bleed from the spines. To avoid harming yourself while planting your cactus, it is a good idea to use everyday kitchen tools like a fork, spoon, and thick tea towel.
Cactus should be planted in a compost that drains very well, such as cactus compost. Alternately, use a multipurpose compost devoid of peat that has been enriched with horticultural grit or vermiculite to improve drainage.
To finish the aesthetic of the pot display, add a layer of horticultural grit or pebbles. Additionally, this stops water from re-splashing on the cactus.
In our No Fuss video guide, Kevin Smith of Gardeners’ World Magazine demonstrates how to use cactus plants to make a visually appealing display. Kevin discusses how to make a decorative mulch, which compost to use, and why salad tongs are the best tool for handling cacti:
Caring for cactus plants
Water cacti in the summer only once a week at most. A decent watering less frequently is preferable to a little-and-often strategy. In the coldest months, you shouldn’t need to water cacti at all.
Cacti should be repotted every two years to receive fresh compost; larger pots aren’t always necessary.
Stan Griffin of Craig House Cacti shares his three best growing advice for cactus plants in this Golden Rules video, including when to water, feed, and when not to. He also offers guidance on how to take cactus cuttings.
Growing cactus plants: problem solving
Cactus plants often pose no problems. Overwatering or inadequate lighting might cause them to decay at the base. The plants frequently die as a result of this.
Spindly growth is possible in cactus plants, although it is simple to fix. In our Quick Tips video, Emma Crawforth from BBC Gardeners’ World Magazine explains everything.
Cactus varieties to grow
- Golden barrel cactus, Echinocactus grusonii, is initially globular but later becomes tall. It has brilliant green stems with spiky ribs that are native to Mexico. In the summer, flowers that are bright yellow bloom.
- The varied cactus Gymnocalycium paraguayense has flattened spines. In spring and summer, it blooms a creamy white color.
- A globe-shaped cactus with brilliant pink, funnel-shaped blossoms is called Mammillaria spinosissima. It has reddish-brown or yellow center spines.
- Rebutia krainziana is a clump-forming barrel cactus that grows little, white areoles and spines in contrast to its dark green, up to 7 cm in diameter stems. Large, yellow or red flowers grow in a dense clump around the main stem in late spring.
You Will Need
- Cacique seed
- clay and plastic miniature pots
- Cactus compost or free-draining compost
- fine grit or vermiculite
- glass sheet
- spoon or fork
- Tweezers
- Gravel
Step 1
A pot should be filled with a loose-draining, moist compost. Firm the surface down gently and level it. Spread your mixture of cactus seeds evenly around the area, being careful not to sow them too densely.
Step 2
Over the seeds, evenly cover the surface of the compost with a thin layer of vermiculite or fine grit. To keep the soil moist, leave the pot wrapped in a clear plastic bag in a greenhouse or on a warm windowsill.
Step 4
Your seedlings should be ready for transplantation the following spring. To gently pry out individual cactus, use a fork or spoon, being careful not to get the spines on your skin.
Step 6
Add compost all around the seedling and give it plenty of water. If more compost is required, add it after placing the gravel around the seedling with the spoon. Keep in a bright area, like a windowsill, and turn on the pot as necessary.
For cactus seeds to sprout, what?
The cactus blossoms produce seeds. If you want to try collecting them, pick the faded blooms and put them in a tiny paper bag. As soon as the blossoms have completely dried out, you can find the seeds. As many seeds are sold online, you can also buy them. Make sure you’re buying from a reliable source by checking. You want seeds that are healthy and likely to grow.
The seed must be awakened from its dormancy before it may sprout. When learning how to plant cactus seeds successfully, there are several ways to eliminate the dormancy factor that are crucial.
Nick the seed’s protective hard shell. Some types of seeds require soaking before planting. One of the seeds with a hard seed coat is opuntia, which will germinate more quickly if the seed surface is scratched and wet. The cold stratification procedure is advantageous for opuntia seeds as well. Follow the steps in this order for the best seed growth:
- With sandpaper, a little knife, or your fingernail, scarify the seed by creating a tiny opening.
- Spend a few days soaking in warm water, changing it every day.
- Put the soil in the freezer or somewhere cool to stratify for 4 to 6 weeks.
Following these procedures, sow your seeds in a moist, well-draining seed starting mix, and then cover them. Avoid planting deeply. Some can simply be placed on top of the soil, like the golden barrel cactus. For others, all that is required is a light soil covering.
Locate away from the sun yet in a bright area. Sunlight with filters is acceptable. Cactus can survive in dry climates, but it needs sufficient humidity to germinate. The soil must be kept wet but not drenched. In a few weeks to a few months, seeds will begin to sprout. A virtue is patience.
According to information on growing cactus seeds, above-ground development takes shape before the root system does, therefore constant hydration and high humidity are required until roots have fully formed. This typically continues until the plant has filled the starter container. Then you can transfer the cactus you started from seed.
Cactus seed soaking is required.
Use pre-made or homemade cactus soil mix to fill a tiny pot. To level the earth, gently press it down. The soil is properly drained and aerated with the use of inorganic grit, sand, or pumice.
Step 2
The seeds should be soaked in warm water for 30 minutes prior to planting. This encourages germination and loosens the seed coat. Opuntias need a few days of soaking in warm water since their seed coverings are quite resistant. Soak the seeds, then scatter them over the top of the flat soil. Unless the seed is exceptionally large, avoid pressing it into the soil.
Step 3
Just enough inorganic top dressing should be used to completely cover the seeds and soil surface. Don’t cover the seeds entirely in the top coating. Water gently and let the pot entirely drain.
A word about watering: During step 4, it is essential to use freshwater or distilled water to help avoid bacterial and algal growth. If the chlorine in your tap water is overpowering, you should think about drinking distilled water instead. The chlorine will damage or stop growth by burning the young, delicate roots and perhaps causing iron chlorosis. Careful watering can be accomplished by either letting the pot stand in water that is half its height or less, or by gently watering from the top while being careful not to wash away the top dressing. Allow the pot to drain completely in both scenarios.
Step 4
With a plastic container that enables light to pass through, cover and seal the pot. This might be a plastic tub or a supported plastic bag that is rubber-banded shut around the plant. The goal is to create a setting that will act as a greenhouse by retaining heat and moisture. Many things will work, so think creatively and ingeniously! But take cautious not to leave the seedling container submerged in water for too long. If you have chosen a plastic cover that is clear and colorless, move the pot to a location with bright indirect light that is approximately 70 F (21 C). If you’ve picked a clear but colored container, like blue or green, you should put it somewhere with a little more light while keeping the temperature the same. If you have chosen a container that is slightly hazy or foggy, you should put it in a cooler environment, 65 F (18 C), where it receives at least 4 and no more than 8 hours of direct sunlight, with the remaining hours of the day spent in brilliant indirect light.
Keep in mind that the sun is hotter in the late morning and afternoon than it is in the early morning or early evening. Consider the plastic bottle in general as sunscreen. The most light can travel through clear, colorless plastic, slightly less light can pass through clear, colored plastic, and even less light can flow through fogged, clear plastic. In every situation, the plastic container’s interior will warm up.
Don’t fry your young, delicate plants! If the walls of your container dry out during germination, water sparingly, reseal the container, and move it to a warm, well-lit area. If algal growth appears, remove the cover and let the seedling pot partially breathe before wiping it down with a solution of no more than 1 part bleach to 20 parts water (5 percent bleach in water). Give the cover time to dry. Place the seedling container back in a warm, well-lit area after recovering it and sealing it. As needed, keep cleaning the plastic container.
Step 5
The recently sprouting seedlings appear to be well on their way, despite being above earth. They have disproportionately small root systems underground, making it difficult for them to quickly take in the nutrients they need to grow into mature plants. Therefore, until they are almost fully grown, the seedlings should be kept in a plastic container at a high humidity level. Up until appropriate root systems are created, high humidity makes it easier for the roots and leaves to absorb water and nutrients.
Step 6
When the seedlings are large enough to handle, carefully take each seedling from its original nursing pot while wearing gloves or covering your fingers with tape. If the soil has kept moist, this is much simpler.
Step 7
Repot the seedling gently into a pot filled with cactus and succulent soil mix, filling the pot all the way to the top, and top dress with sand, gravel, or pumice. 3 or 4 days later, water. Never put the cactus back in its humidity compartment made of plastic.