Sphaeralcea incana, with the common names gray globemallow and soft globemallow, is a desert plant in the mallow family (Malvaceae).
Gray globemallow is fairly disease-resistant and generally does not suffer from many illnesses. However, it can be vulnerable to pests and diseases present in its surroundings. These problems are usually minor. Regarding care, this plant needs moderate maintenance. It should be pruned regularly to keep a good appearance and support healthy growth. Fertilizing can also help encourage flowering. Gray globemallow is well suited for someone with outdoor space, such as a garden or patio, and does not demand extensive care experience. It may need more attention when grown indoors.
How to keep Sphaeralcea Incana.
Light
Gray globemallow grows best with plenty of light, similar to the environments it naturally inhabits. It tolerates partial light, but shows its strongest growth with abundant illumination. Its need for light is fairly consistent at different stages of development. Excessive light can scorch the leaves, whereas inadequate light can inhibit growth.
Water
Gray globemallow is well-suited to arid environments, as it needs minimal water and prefers dry soil between watering sessions. It should be watered every two weeks, with the soil allowed to dry out completely in between. While it is typically grown outdoors, providing enough sun exposure during the growing season can improve its ability to efficiently absorb water.
Temperature
Gray globemallow naturally occurs in areas with mild to warm climates, preferring temperatures between 59 and 89.6°F (15 to 32°C). To achieve optimal growth year-round, it is recommended to reproduce these temperature conditions.
Fertilizer
The best time to fertilize a Gray globemallow is in early spring, as it comes out of dormancy and begins active growth. Fertilization supplies important nutrients needed for healthy growth. Although Gray globemallow requires relatively little fertilizer, feeding it once a year can improve its survival and encourage better, longer-lasting flowers.
Pruning
Gray globemallow, with its silver-gray leaves and vibrant orange flowers, thrives when properly pruned. To encourage growth and blooming, it's best to prune the plant from early to late spring. Removing dead branches will improve air circulation. Always use clean tools to prevent disease and ensure vigorous, healthy plants in your garden.
Botanical profile.
- Plant Type
- Herb, Shrub
- Life Cycle
- Perennial
- Genus
- Sphaeralcea
- Family
- Malvaceae
- Hardiness Zone
- 7
- Mature Height
- 0.91 m to 1.83 m
- Mature Spread
- 61 cm
- Leaf Color
- Green, Gray, Blue, Yellow, Red
- Leaf Type
- Deciduous
- Flower Color
- Orange, Red
- Flower Size
- 2.03 cm to 3.56 cm
- Bloom Time
- Late spring, Summer, Fall
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- Mid summer, Late summer, Fall, Early winter
- Native Area
- Mexico
Other names.
Reader questions.
What are the sunlight requirements for Gray Globemallow?
Gray Globemallow requires full sun, meaning it should receive above 6 hours of sunlight daily, to thrive optimally. However, it can also grow in partial sun, which is about 3-6 hours of sunlight. It's important to observe the movement of sunlight through your garden to find spots that offer the right balance of light and shade, ensuring the best conditions for your plants.
What is the ideal temperature range for Gray Globemallow?
Gray Globemallow thrives in environments with moderate to warm temperatures, specifically between 59 to 89.6°F (15 to 32°C). It is important to maintain these temperatures for optimal growth throughout the year. The plant exhibits strong cold resistance, so special frost protection measures are usually not necessary during winter. However, if winter temperatures are expected to fall below -15°C, it's crucial to provide cold protection by covering the plant with materials such as soil or straw. Additionally, watering the plant abundantly before the first freeze in autumn ensures the soil remains moist and enters a frozen state, helping to prevent drought and water scarcity for the plant during the colder months.
How does Gray Globemallow respond to light conditions?
Gray Globemallow thrives best under plentiful exposure to light, akin to the conditions it traditionally grows in. The plant's growth is most vigorous with abundant light, although it can also manage with partial exposure. Throughout its growth stages, the requirement for light does not drastically change. However, excessive exposure can cause leaf scorching, while insufficient light may stunt the plant’s growth.
How does Gray Globemallow react to low temperatures?
Gray Globemallow is quite cold-tolerant and should ideally be kept in temperatures above 15°C. However, during winter, it's advised to maintain temperatures above -10°C. If temperatures drop below -15°C, you may not notice immediate changes during the winter, but there may be a significant decrease in sprouting or even no sprouting at all come springtime. To manage any damage from low temperatures in spring, it's recommended to remove any parts of the plant that have failed to sprout.
Can artificial lighting be used for Gray Globemallow? If so, how?
Yes, artificial lighting can be utilized for Gray Globemallow, especially when natural sunlight is insufficient, like during winter or in less sunny spaces. Indoor plants benefit tremendously from adequate lighting for optimal growth. LED lights are popular as they can provide specific wavelengths needed by plants. For full sun plants, 30-50W/sq ft of artificial light is recommended, for partial sun plants 20-30W/sq ft, and for full shade plants 10-20W/sq ft. The light source should be placed 12-36 inches above the plant to mimic natural sunlight, ensuring 8-12 hours of light per day.
How should you care for Gray Globemallow during high temperatures?
During the summer, it's crucial to ensure Gray Globemallow stays below 32°C. If temperatures exceed 35°C, the plant's leaves might become lighter in color, prone to curling, susceptible to sunburn, and in severe cases, the entire plant may wilt and become dry. To alleviate damage from high temperatures, trim away the sunburned and dried-up parts. Move the plant to a location that provides shade during the midday and afternoon sun, or utilize a shade cloth to protect it. Ensure the plant is watered in the morning and evening to keep the soil consistently moist.
What are the symptoms of light deficiency in Gray Globemallow?
Symptoms of light deficiency in Gray Globemallow include smaller new leaves compared to mature ones, leggy or sparse growth, faster leaf drop, slower or no new growth, lighter-colored new leaves, and conditions such as chlorosis and sunscald. Leaf curling, wilting, and leaf scorching can also occur as symptoms of either too much or too little light, indicating that the plant is struggling with its current light conditions.
What solutions are available for managing light issues with Gray Globemallow?
To address light issues with Gray Globemallow, gradual adjustment to sunlight is key. For indoor plants, moving them to a sunnier location each week until they receive at least 6 hours of sunlight daily is crucial. Using artificial light, like desk lamps or professional grow lights for at least 8 hours daily, can also help. Outdoors, plants should be gradually moved to sunnier spots to avoid shock. Pruning obstructions like tree branches can improve sunlight exposure. For smaller plants, transplanting during the dormant period (late winter or early spring) to a sunny location with good drainage is recommended. Note that parts of the plant affected by insufficient sunlight may not recover, but new growth should be healthy with increased light exposure.
