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 long does it take for the seeds of prickly pears to sprout?
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.
Can prickly pear seeds be cultivated?
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 assist 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 much time does a prickly pear cactus require 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 is prickly pear cactus grown indoors?
Opuntia species, including prickly pears, are relatively common desert cactus planted as indoor houseplants. They have wide, flat, thick, spine-covered pads on segmented stems that are exceedingly decorative.
Others contain small, hair-like barbs that detach upon contact with the plant, stick in the flesh, and can be challenging to remove, so treat with caution. Some have huge, rounded spines.
The edible, lemon- or plum-shaped prickly pear fruit of several Opuntia species, commonly referred to as “Indian figs,” is becoming into a delicacy in the UK. They are attractive and colorful as well. When fully grown, the meat inside turns orange and the outside turns bright red. When ripe, some types have a yellow outside and a green interior. These are utilized in syrups, preserves, and jellies because they aren’t quite as sweet. However, for plants to grow healthy fruit in the UK, the environment must be ideal.
Cultivation
Prickly pears should be cultivated inside in a conservatory or heated greenhouse with good, all-around lighting, ideally with a south or west facing aspect. In the summer, they require 4-6 hours of direct sunlight.
Although they are not cold- or frost-resistant, they can be brought outside in the summer to a warm, sunny patio. Make sure to bring them inside before the early autumn weather turns chilly.
They require minimum spring and summer temperatures of 18C (65F), however while they are dormant, they prefer colder temperatures of 7-13C (45-55F). Keep them away from radiators, direct heat, draughts, and fans, which can lead to temperature changes.
Prickly pear cactus varieties
Opuntia has more than 200 different species. From low-growing plants that grow to a height of 30 cm (1 foot) to those that can easily reach 5.4 m (18ft).
Opuntia microdasys, sometimes known as bunny ears, is likely the best kind to cultivate at home. Only reaching heights of 30-45cm (12-18in), it has oval pads covered in tufts of tiny, golden spines. But don’t let their diminutive size deceive you; if they get caught in your fingers, these tiny barbs can be just as unpleasant as much larger spines.
Planting prickly pear cacti
They require a compost that is extremely well-drained, just like all other desert cactus, so either add more grit to John Innes Compost or, even better, use a compost that is recommended for cacti and succulents.
To give the compost a natural, finished appearance and to help prevent the plant’s base from lying in wet compost, add a topdressing of gravel, pebbles, or sharp sand on top of the compost.
When working with the plants, be mindful of the spines. It is preferable to wear gloves and wrap a collar made of rolled-up newspaper around the stem when potting up or otherwise moving the plants.
How to care for prickly pear cacti
Many people mistakenly believe that desert cacti don’t require any watering. They can withstand extended droughts by storing water in their stems, but if given enough water, they develop and blossom considerably more effectively. When plants are growing (from March/April to September), water them heavily, but when they are dormant, water them less frequently—once or twice a month may be adequate. Before watering it once more, let the compost somewhat dry out. Never let the pot sit in water; always let the compost drain.
Feed with a balanced liquid feed once a month from late spring to late summer while plants are growing; do not feed in the fall and winter.
Only when it is absolutely necessary, such as when they become very potbound or outgrow their current container, can prickly pears be replanted. Repotting should only be done in late spring or early summer into a larger pot.
Can prickly pear cactus grow in water?
Although prickly pear propagation is rather simple and easy, there are a few additional considerations. Look through for more information.
How do you root a broken piece of cactus?
Good news: the procedure is essentially unchanged. I frequently propagate succulents in this manner. A leaf splits off? I’ll preserve it and spread it! Pads on prickly pears can be removed quite easily. If the plant is in a container outside, it could get knocked over by a storm and the pad could come off. You can save the cactus and pad if they are in good condition.
In fact, you can probably simply place it in the same pot as the plant from which it was broken off. This will also produce a fuller, more fascinating appearance. particularly if the pads have various heights.
Will a cactus root in water?
Absolutely, yes. Cacti can be rooted in either soil or water. Water does not provide nutrients, but it does promote the growth of a distinct type of root. I advise avoiding water rooting entirely and going straight to soil because prickly pear roots so easily there. In soil, it also takes root more quickly.
How fast do prickly pear cactus grow?
Prickly pears grow fairly slowly, based on my personal experience growing them in pots both indoors and outdoors. Every summer, each pad produced 12 new baby pads. However, your plant will probably grow more quickly if you have a longer growth season or more time with warmer temperatures.
If you have the option, prickly pears might, like many plants, thrive better planted in the ground. I have to keep mine in containers or dig them out and bring them inside because they wouldn’t survive the cold where I live. I choose pots!
Can cactus grow in shade?
Yes, but they particularly enjoy strong light. My prickly pears receive light from late morning till sundown when I keep them indoors for the winter in a southeast-facing window. I expose them to full, direct sun all day long for about a week before I take them outside. They flourish there!
They would probably also thrive in the shade, given the quantity of light they receive from a window with brilliant indirect light inside is probably nearly comparable. However, I advise giving them a warm summer vacation if you can.