Echinocereus subinermis
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Echinocereus subinermis

Hedgehog Cactus

Tier 1 Difficulty: easy Water: low Light: full_sun
Water every
30 days
Temperature
20–37 Β°C
Soil pH
6–7
Hardiness
Zone 9–12
Click count
26
Observations
31

Description

Source: leafsnap

Echinocereus subinermis is a species of flowering plant in the cactus family Cactaceae, native to north, northwestern, and central Mexico. The stem is a ball with 5 to 8 prominent ribs, growing to a cylinder or cone 30 cm (12 in) tall and wide, and producing yellow flowers 8 cm (3 in) long in early summer.In cultivation in temperate regions it requires the protection of glass with heat. It has gained the Royal Horticultural Society's Award of Garden Merit.

🌳 Echinocereus subinermis is an excellent choice for sunny or partially shaded areas in cactus and succulent gardens located in warm climate zones. This small, compact cactus species is also well-suited for rock gardens and xeriscapes, where its pale green stem and bright yellow flowers beautifully complement other drought-tolerant plants.

🎭 Hefty, round, isolated

Care Guide

πŸ’§ Water Once per month

Echinocereus subinermis is well-suited for arid climates, needing minimal watering, usually about once every four weeks. It thrives in well-draining soil, which helps prevent root rot. This plant is also adapted to intense sunlight and heat, storing moisture effectively to withstand prolonged dry spells.

Suggested frequency: Once per month
FAQ
What should I do if I give too much or too little water to my Echinocereus subinermis?

Echinocereus subinermis and other succulents can survive without water for long periods, so it's rare to find one suffering from underwatering. However, if you forget to water your plant for a month or more, you may notice it looking thirsty or with leaf damage. Signs of underwatering include shriveled, dry, and flat leaves, some of which may have dried up completely and turned brown. The soil will also be completely dried out. To remedy this, give your Echinocereus subinermis plenty of water by submerging the pot in water for 5-10 minutes until the soil feels moist. Remove dried out leaves to make way for new growth. Overwatering is dangerous for Echinocereus subinermis and can lead to root rot, which hinders the absorption of nutrients and water by the roots. Symptoms of overwatering are yellow, swollen, and translucent leaves that may burst open. If left untreated, leaves may turn brown or black and fall off easily. Check the soil to confirm if overwatering is the issue. To save an overwatered plant, act quickly before extensive damage occurs. Remove the plant from its pot and examine the roots and soil. If the roots are dark brown or black, soft, mushy, or slimy, root rot has set in. If most of the roots are affected, it may be impossible to save the plant. In this case, remove healthy leaves and use them to propagate a new plant. If only some roots are affected, there's a chance to save it. Remove unhealthy roots with a sterilized cutting tool and dip the remaining firm, pale roots in fungicide. Repot the plant in fresh, well-draining soil. While not guaranteed, the plant will likely recover and produce new growth in the next growing season.

How frequently should I water my Echinocereus subinermis plant?

Determining how often to water Echinocereus subinermis is not governed by a strict rule. The best approach is to check the soil and only water when it is completely dry. You can use your finger or a moisture meter to assess the moisture level beneath the surface. If you have planted it in a deep pot, you can use a stick or chopstick for this purpose. If the soil feels slightly damp, it is advisable to wait a few days and check again. Generally, most individuals will need to water Echinocereus subinermis every two weeks during summer and once a month in winter. However, there are various factors that can influence the watering frequency. The following section provides some considerations to help you determine the appropriate watering schedule.

What do I need to think about when watering my Echinocereus subinermis plant?

To properly water your Echinocereus subinermis, consider several environmental factors. The container size and soil type impact watering frequency and quantity. Use a container with drainage holes to prevent excess water accumulation. A small container holds less moisture, so it requires more frequent watering, while a larger pot retains moisture longer and needs less frequent watering. Avoid using an oversized container as this can lead to overwatering. Repotting should involve moving to a size slightly larger than the current container, preferably a shallow one since this plant has shallow root systems. The watering needs of Echinocereus subinermis vary depending on the season. In winter, growth slows down, and the plant requires less water since it is conserving energy. Cooler temperatures reduce evaporation, keeping the soil moist for longer periods. Your local climate also plays a role in watering frequency. Humid areas that receive more rainfall require less frequent watering compared to dry and arid environments. Remember that the same geographic location can experience significant variations due to seasonal changes and indoor heating or air conditioning use. For outdoor planting, once Echinocereus subinermis has established a root system in the ground, it typically doesn't need extra watering aside from natural precipitation and dew. However, during extended dry spells, occasional watering may be necessary. If growing in a container, you can move the plant outside in spring and summer when the temperature is suitable, ensuring sufficient sunlight exposure. However, be aware that potted Echinocereus subinermis kept outdoors generally requires more water than those kept indoors due to increased sun exposure, even if on a shaded porch.

How should I water Echinocereus subinermis?

To water Echinocereus subinermis effectively, soak it thoroughly and allow it to dry out before watering again. This plant can tolerate drought, so it's okay to let it get quite dry before watering. It's always better to give this plant too little water than too much. When watering, make sure to thoroughly soak the soil throughout the entire pot. Instead of pouring water in just one spot, try to go around the whole rim of the planter to ensure all sides of the plant get wet. The amount of water needed will depend on the container size and soil absorption. Allow the water to drain out from the drainage holes, ideally leaving it in the saucer for 20-30 minutes to absorb into dry pockets of soil. Then, discard any excess water in the saucer to avoid waterlogged soil. Bottom-watering is also an excellent method for Echinocereus subinermis, as it ensures thorough moisture for the soil. Place the pot in a saucer of water and let the soil absorb moisture through the drainage holes. You'll know the soil has absorbed enough water when the top layer is moist. This method takes longer than top-watering but ensures even water distribution throughout the pot. The natural habitat of Echinocereus subinermis is relatively dry with sporadic rain, thoroughly moistening the soil. You can mimic this by bottom-watering the plant when the soil is completely dry. Deep soil bathing is preferable to frequent light watering for Echinocereus subinermis.

β˜€οΈ Light Full sun

Echinocereus subinermis does best where it receives ample sunlight, like in its native surroundings. It can tolerate somewhat lower light levels, but insufficient light will impair its health and growth. Its light requirements can change during different stages of development.

Ideal: Full sun
FAQ
How much sunlight does Echinocereus subinermis need to grow? How much sunlight does Echinocereus subinermis require for its growth?

To ensure the healthy growth of Echinocereus subinermis, it is recommended to provide it with a minimum of 6 hours of sunlight daily. However, the plant can tolerate longer hours of sunlight, up to 14 hours, without any adverse effects. The actual minimum hours may vary depending on sunlight intensity and environmental conditions, but excessive sunlight is generally not a concern for Echinocereus subinermis.

What kind of sunlight does Echinocereus subinermis require?

Echinocereus subinermis, a full-sun plant, requires ample bright sunlight to thrive. It can do well in direct light or bright indirect sun. While certain varieties may survive with partial sun exposure, they generally benefit from receiving more sunlight.

Should I keep Echinocereus subinermis out of the sun?

Echinocereus subinermis is a type of plant that thrives in extremely hot and sunny environments. Because of its adaptation to these conditions, it doesn't require protection from the sun. However, if you are planning to move your Echinocereus subinermis to a sunnier spot than it's used to, you need to be cautious. Plants need time to adjust to new conditions, so it's recommended to start by gradually exposing it to the sun for a couple of hours each day. As the plant adapts, you can increase the duration of sun exposure. Once fully adapted, most Echinocereus subinermis plants can handle full sun and won't require protection.

If Echinocereus subinermis doesn't get enough sunlight, what will happen?

Echinocereus subinermis needs sufficient sunlight to thrive and grow. If it doesn't get enough sunlight, it may show signs like pale coloring, wilting leaves, and leaf drop. In some cases, it may also become leggy, with weak stems and a sparse appearance as it tries to reach for more light.

What happens if Echinocereus subinermis gets too much sunlight?

Echinocereus subinermis, a type of cactus, can change color to shades of red, pink, or orange to protect itself from too much sunlight. To achieve this color change, many people prefer to expose the plants to mild sun stress during the summer. This is not harmful and the plants will return to their normal coloring when the sunlight decreases from autumn to spring. However, if Echinocereus subinermis is suddenly exposed to direct sunlight, it can get sunburned. Sunburned plants will show white or brown spots on the leaves that received the most sun. In such cases, the plant should be moved to a shadier spot and watered if necessary. If some leaves are damaged, they can be removed and new growth will eventually replace them.

🌑️ Temperature 20–37.8Β°C

Echinocereus subinermis thrives at temperatures of 68 to 100 ℉ (20 to 38 ℃). Native to warm, arid areas, it can withstand high daytime heat. In cooler seasons, lowering nighttime temperatures is recommended to encourage flowering.

Ideal temperature: 20–37.8Β°C
FAQ
What temperature is best for your Echinocereus subinermis?

The Echinocereus subinermis thrives best in specific temperature conditions, ranging from 75-90℉ (25-32℃). It is important to ensure that the temperature does not drop below 75℉ (25℃) during early winter. In such cases, bringing the plant indoors can provide better protection from extreme temperatures. Although the Echinocereus subinermis can tolerate certain extremes, such as lows of 50℉ (15℃), it is not ideal. Therefore, it is advisable to bring it indoors if winter conditions are anticipated outside.

How do I change the temperature for my Echinocereus subinermis at different growth stages?

Echinocereus subinermis goes through different growing phases. First, the dormant seed sprouts and becomes a seedling. For the seeds to germinate, they require specific environmental conditions, such as a temperature ranging from 75-90℉ (25-32℃). The best time to promote vigorous growth is during the summer, when the optimal temperature is around 85℉ (30℃). During the hot summer months, you can move your Echinocereus subinermis from indoors to a sunny spot to ensure it receives enough sunlight.

How do I make sure my Echinocereus subinermis stays warm during the cold seasons?

To help your Echinocereus subinermis survive the winter, it is recommended to bring it indoors. Some people choose to purchase grow lights to ensure the plant gets enough sunlight, but if your home is not very dark, you may not need to invest in these lights. Instead, place your plants where they will receive the most sunlight possible. This should be enough to keep the Echinocereus subinermis thriving in the winter. If you have multiple plants, rotate them so that they all receive sufficient sunlight. However, if you live in northern areas with cold weather, be cautious about placing the Echinocereus subinermis too close to the window, as the extreme cold could damage them.

What will occur to my Echinocereus subinermis when the temperature is very hot or very cold?

Your Echinocereus subinermis prefers warm temperatures around 90℉ (32℃) and does well in temperate climates between 75-90℉ (25-32℃). However, it is important to protect it from temperature extremes during hot weather. In the summer, high temperatures ranging from 90℉ to 95℉ (32-35℃) can enhance the colors of your Echinocereus subinermis, but be cautious as this can stress the plants and potentially damage their stem and root system. During the hottest part of the day, it is advisable to relocate your plant to a shaded area or shield it with a shade cloth. On the other hand, during the winter, it is better to keep the plant dry.

How do I change the temperature for my Echinocereus subinermis during different seasons?

During the summer, the high temperatures slow down the growth of Echinocereus subinermis to help it survive in hot conditions. As the weather becomes cooler and rainfall increases, the Echinocereus subinermis begins to grow again. If you live in a place with hot summers and warm winters with regular rainfall, you don't need to make any changes. However, if you live in an area with cold winters, it's advisable to let your Echinocereus subinermis grow more in the summer and rest during the winter. This is because there is not enough sunlight for it to grow during the winter months. To assist your Echinocereus subinermis in entering dormancy in colder temperatures, you can lower the temperature to approximately 50℉ to 75℉ (15℃ to 25℃).

πŸ’¨ Humidity
Humidity:
πŸͺ΄ Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

Echinocereus subinermis only needs light fertilization once or twice a year during the growing season. Do not fertilize in winter or in summer when the plant is dormant. Cut back on fertilizer for plants that have been repotted and wait a couple of months after repotting before applying any fertilizer. Fertilizing helps maintain healthy growth and promotes flowering.

FAQ
Why should I put fertilizer on my Echinocereus subinermis?

Fertilizing Echinocereus subinermis during the growing season helps provide nutrients for healthy growth and blooming. Even though it stores water and nutrients, applying plant food supports its overall wellbeing.

When should I fertilize my Echinocereus subinermis for best results?

Echinocereus subinermis, like all plants, benefits from nutrients. However, it only requires a small amount of fertilizer during the growing season. It is best to fertilize this plant 1-2 times a year, specifically in the spring and autumn. Avoid fertilizing it in the winter and summer when it is dormant. When repotting, be cautious and decrease the amount of fertilizer used. It is also advisable to wait a few months after repotting before applying fertilizer.

When is the best time to not fertilize my Echinocereus subinermis plant?

Echinocereus subinermis, like other plants, goes into a dormant period. During this time, it is best to refrain from applying fertilizer. Both in the summer and winter, the plant stops growing, so it is important to avoid fertilizing. Additionally, it is recommended to wait a couple of months after repotting in the spring before resuming fertilization.

What kind of fertilizer does my Echinocereus subinermis plant need?

To best fertilize Echinocereus subinermis, use a liquid plant food made specifically for succulents and cacti. Remember to dilute the fertilizer with water, using half the recommended strength. It's important to avoid an excess of fertilizer in the soil. Apply the diluted fertilizer to the base of the plant, and make sure to water thoroughly. Just be sure that any excess moisture drains away, whether from the container or into the ground.

How should I fertilize my Echinocereus subinermis plant?

When fertilizing Echinocereus subinermis, it's easier to use liquid plant food, but granules are also an option. Follow the packaging instructions and dilute liquid fertilizers to half-strength. Regardless of the type of plant food you choose, always apply it to the soil by covering granules with a thin layer of soil and watering.

πŸͺ΄ Pot & Repot 2-3 years

Repot Echinocereus subinermis in spring or summer, picking a pot slightly larger than the current container with good drainage. Use a well-draining, sandy or gritty cactus mix. Handle the cactus carefully to avoid its spines. Allow the plant to dry out before repotting to help prevent root rot. After repotting, wait a week before watering so the roots can heal.

Suggested frequency: 2-3 years
βœ‚οΈ Pruning

Echinocereus subinermis needs very little pruning. However, it's important to remove withered flowers and branches so the plant can concentrate its nutrients on healthy growth.

🌿 Propagating
πŸ› Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Succulent, Shrub
Life Cycle
Perennial
Genus
Echinocereus
Family
Cactaceae
Hardiness Zone
9-12
Mature Height
30 cm
Mature Spread
30 cm
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
Yellow
Flower Size
5.08 cm to 12.70 cm
Bloom Time
Late spring, Early summer, Mid summer
Planting Time
Spring, Summer, Autumn
Harvest Time
Mid summer, Late summer, Early fall

Tags (7)

Common Names (1)

en Hedgehog Cactus