The ripe fruit of a prickly pear cactus can be used to collect the seeds of the plant. The moniker “prickly pear cactus” is accurate. North Carolina State Cooperative Extension suggests wearing gloves and handling plants cautiously since their spines are sharp and can irritate people’s skin.
The seeds should be well cleaned to get rid of any pulp, then dried on paper towels in a warm area for a week or two until they were totally dry. According to North Carolina State Cooperative Extension, opuntia seeds need to mature for at least a year before germination. Until you’re ready to plant them the following spring, keep seeds in an airtight container in a cool, dark location.
How are cactus fruit seeds planted?
Choosing a location for your cactus to grow is the first step in growing prickly pear cactus. Both containers and the ground can be used to grow prickly pears. Choose a succulent and cactus mix for your soil if you’re growing in a container, and make sure the container has drainage holes. Start by adding a layer of pebbles to the bottom of the container for improved drainage. When growing prickly pears in containers, you must transfer them anytime the cactus becomes root-bound into larger pots.
Opuntia cactus can grow in less-than-ideal soil, but they favor well-draining, sandy or loamy soil and may not thrive in some coastal Southern California areas with thick clay soil unless the soil is improved with drainage amendments. Consider adding some peat moss or sand to your soil mix if you are working with thick, clay soil that drains slowly and absorbs moisture. This will help the soil’s structure.
You must choose how you want to start your cactus after determining whether it will grow in the ground or in a container. Starting from seed, growing from a cutting, or buying a young plant at a nursery nearby are your three possibilities for doing this.
The simplest option to get started is to buy a young plant at a nursery; all that’s needed to do is move your cactus to a sunny location with well-draining soil. Established plants can tolerate all-day direct sunlight and little water. Prickly pears should be transplanted in the spring, but if you live in Southern California’s dry, arid region, you should be able to do so at any time of the year.
Growing Prickly Pear Cactus for Cuttings
The simplest method for starting your own cactus is by propagation using a cutting. You must first gather your cutting, which you can do by foraging or by contacting someone who already has a mature plant. Pick a healthy pad, hold it with gloves on, and cut it free from the plant by cutting above the point where it connects to the plant. Avoid cutting into the plant below the area where the pad is attached because this could harm the plant.
Once the amount of pads you want to multiply has been trimmed, spread them out in a dry, shaded place far from kids and animals. To allow the cut to heal and develop a callus, leave them outside for about a week. Then, to help the pad stand upright, bury the callused end of the pad one to two inches deep in a container. You can use small rocks to support it if it is teetering or tumbling over, which is a problem.
Before moving your cactus into your garden, it is advisable to let it grow in the container for about a year. This will enable you to have more control over the growing environment, allowing the plant to establish itself and begin to flourish. The majority of the year, you can bring the planted pad outside as soon as it is planted, however you may want to keep it out of the mid-afternoon sun until it starts to establish. Keep your opuntia indoors till spring if you reside somewhere with exceptionally harsh winters.
Early on, your cactus will need a little more water, so when the soil starts to dry out, water it by about an inch. At initially, you might just need to do this once or twice per week. Once you notice new growth, your cactus is considered established. At this point, you can cut back on watering to roughly a quarter inch of water each week in the summer and a quarter inch every other week in the winter.
After your plant becomes established, you can relocate it to its permanent home because it can withstand full sun all day.
Growing Prickly Pear Cactus from Seeds
It is possible to grow prickly pear cactus from seeds, although the process is more time-consuming and labor-intensive. Although it is considerably simpler and more practical to grow your cactus from a cutting, here are some recommendations to get you going if cuttings are not readily accessible or you prefer to grow from seeds.
You must first obtain the prickly pear cactus seeds. You can get seeds from prickly pear fruit, buy them online or in some nurseries, or both. If you pick them from fruit, make sure all bits of the fruit are entirely removed before drying them up and planting them.
One seed should be placed in each little pot or portion of the seed tray after the succulent and cactus mix has been added to the container or tray. Opuntia seeds should not be pushed too far into the soil because they need sunshine to sprout. To promote germination, place your pots on a sunny windowsill or beneath grow lights.
As you wait for them to germinate, keep the soil moist but not damp. Once you have seedlings, keep an eye on their color to see whether they want more or less light. Move them to an area with more sunlight if they appear yellow. They require a location with less light if they appear red or brown. If they are green, they are content with their surroundings.
Your seeds can grow in the pot they are planted in until they outgrow it if you start them in containers. Before transferring them from seed trays to pots to continue growing, check sure they are mature and healthy.
General Tips for Growing Opuntia Cactus
Pruning your prickly pear cactus is only necessary to remove damaged pads. These cacti don’t need fertilizer either, but you can promote the health and development of young plants with a monthly application of 10-10-10 liquid fertilizer. Use a 5-10-10 or a 0-10-10 fertilizer to promote the growth of more flowers and fruits.
How long does it take a cactus fruit to grow?
One of the most common cactus genera in the United States is the prickly pear cactus (Opuntia). This plant, which has over 100 species, is distinguished by its spiny, flat, club-shaped pads. While some species have small, detachable barbs that resemble hairs, others have enormous, rounded spines. While cacti are typically thought of as warm-weather desert plants, certain varieties of prickly pear are tolerant of temperatures as low as USDA zone 4. The optimum time to grow prickly pears outdoors is in the spring, after any risk of frost has passed. Although the plant grows slowly and it might take up to three or four years before a new plant begins bearing fruit, some prickly pears are prized for their edible fruits.
How long do prickly pear seed sprouts take to appear?
Sandpaper should be folded with the rough side inside. Put the prickly pear cactus seed inside the folded sandpaper and lightly touch the outer coat with one palm on top and one under the sandpaper.
You only want to softly scratch the exterior of the seed coat; avoid cutting into the seed. Every seed you want to germinate needs to be treated in the same way.
The seeds should be placed in a small basin with room temperature water and let to soak for the night.
Sand and sphagnum peat moss or coco coir should be combined in a 1:1 ratio, and the mixture should be evenly moistened. To within 1 inch of the rim, pour the mixture into the germination container.
The seeds for the prickly pear cactus should be placed on top of the planting medium, then lightly dusted with sand (about one-eighth inch).
Set the thermostat to 77 degrees Fahrenheit and place the heat mat somewhere that is still shielded from the sun. Place the germination container on top of the heat pad, and continuously maintain a small moisture level in the soil.
Germination of prickly pear cacti can be unpredictable. It could take as little as five days or as long as 180 days for the seeds to grow.
When the seedlings are 3 inches tall, transplant them into separate pots filled with cactus mix. After the first two winters, let them continue to grow indoors. Then, in the spring, when all threat of frost has passed, plant them outdoors.
Observation: Although we have never raised prickly pear cactus from seed, we’ve been told that the germination rate is normally fairly low.
Prickly pear cactus seeds should be planted in wet, shaded, or gloomy environments, according to some growers. Move them to the light in a dryer place once they have sprouted.
To make sure anything germinates, we would try both approaches if we were trying to grow O. humifosa.
How are prickly pear cactus seeds planted?
Cactus in the Opuntia genus are sometimes referred to as prickly pear cacti. They can grow from 3 to 20 feet (0.9 to 6 meters) tall in hot desert regions, depending on the variety and growing conditions. 3 to 15 feet are covered by its spread (0.9 to 4.5 m). Once the spines have been removed, the fruit and leaf pads are edible. As a vegetable, leaf pads are consumed. Fruits are consumed raw and are also used to make juice, jelly, and confections.
In USDA hardiness zones 3b through 11, prickly pear cacti can survive. Once planted, a prickly pear cactus is simple to maintain and may survive two to three weeks of drought.
- Cactus soil should be added to little pots or a seed tray. In the dirt, break up any lumps. Allow the soil to drain after fully watering it.
- Plant the seeds in the late spring when the nighttime temperature regularly exceeds 45 F. (7 C). To smooth the seed coat, rub the seeds on some sandpaper. Compared to untreated seeds, scratched seeds germinate more quickly and consistently.
- Plant one seed per pot or space seeds in seed trays 1 inch (2.5 cm) apart. Incorporate the seed firmly into the soil and top with a thin, 1/8-inch (3-mm)-thick layer of dirt.
- A thin water spray is used to mist the soil’s surface. Put the plastic top on the tray or place the individual pots in plastic bags. To make a vent, carefully cut a small hole in the plastic.
- Put the pots or tray in a window with natural light or near a source of artificial light. Check the temperature and moisture of the soil every day. Prickly Pear Cactus prefers soil and air temperatures of 70 degrees Fahrenheit (21 C). If heat accumulates beneath the plastic, relocate the container or widen the vent to let the heat out. When necessary, spray the soil with water to keep it moist but not soggy.
- Check on the seedlings every day. Yellowing cacti require more light. Cacti that are brown or crimson are getting too much light.
- Once the seedlings’ roots have grown well, transplant them into larger pots or outside. Place the transplants 60 to 90 cm (24 to 36 inches) apart in full light. For the first two weeks or until the plant has adapted to its new home, keep the soil moist. Once the cactus is established, extend the intervals between waterings by letting the soil to somewhat dry out.
- To promote pad growth, fertilize with a balanced fertilizer like 10-10-10. Use a low-nitrogen fertilizer, such as 0-10-10, if you’d rather promote blooms and fruit.
Tips
Harvest the seeds from a prickly pear cactus’ ripe fruit. To properly dry the seeds, dry them on a paper towel in a warm location for a week or two after washing the seeds to eliminate all pulp. Until you’re ready to plant them the following spring, keep seeds in an airtight container in a cool, dark location.
Can cactus fruit be multiplied?
Ouch! Protective gloves are needed when picking cactus fruit, which is also known as prickly pears for good cause. After that, the fruit’s spines must be removed before consumption. Even the supposedly spineless types have small bristles, known as “glochids,” that are sharp and may easily pierce skin.
The flat, green “nopales” of the prickly pear cactus (Opuntia spp. ; USDA hardiness zones 5 to 9) occasionally bear red fruits known as “tunas,” both of which are edible. Cuttings are the best method for propagating prickly pears.
Can cactus be grown from seed easily?
Some people are interested in learning how to cultivate cacti from seed due to the rising popularity of succulent plants and cacti. Anything that produces seeds can be propagated from them, albeit not all seeds are capable of doing so. If the conditions are ideal, cactus seed growth might proceed without your assistance, but this is uncommon. It may take many years for certain seeds to germinate once they fall in their natural environment. You might have to initiate the procedure yourself to get them going. More cactus plants are produced when cactus seeds germinate successfully, increasing your collection.
How frequently do I need to water cactus seeds?
Everything is based on how big your cactus seedlings are. It’s pretty simple to get them to germinate, but the most difficult part is getting them to grow from a seedling into a mature cactus.
If you water your plants excessively, you run the danger of giving them fungus illnesses and other issues that cactus seedlings are particularly vulnerable to. However, if you don’t water the seedlings enough, the tiny, fragile root hairs that are developing on them may dry up and you may lose the seedlings.
<1cm in Width: Keep Soil Moist at All Times
Because they lack the water storage capacity of larger, mature cacti, you must make sure that the soil is always moist when your seedlings are very small, less than 1 centimeter in their breadth. A large, mature cactus may go without water for many, many months. Cactus seedlings can’t do that.
Therefore, at this size, the soil must always be damp but not wet.
There is a distinction between wet soil and damp soil.
>1cm in Width: Water Once a Month
But once they pass that tiny stage—generally when they are one centimeter wide or larger—I start to hold off on watering a little bit longer. I usually only water older cactus once a month and wait until the earth is absolutely dry before I water them again.