Chlorophytum comosum, or spider plant, is a popular houseplant known for its arching foliage and ease of care. These adaptable plants are a favorite for both novice and experienced gardeners. Their characteristic plantlets, dangling from the mother plant, add ornamental appeal and offer a simple way to propagate new plants.
Ideal Temperature Range for Outdoor Growth
Spider plants thrive outdoors in temperatures from 60°F (15°C) to 80°F (27°C). In this range, plants show vigorous growth with lush, vibrant foliage. Consistent temperatures allow efficient photosynthesis and abundant plantlet production. In mild climates, spider plants can be cultivated outdoors year-round, often in containers or as groundcover.
Impact of Cold Temperatures
Temperatures falling below the ideal range can significantly stress spider plants. When exposed to temperatures below 40°F (4°C), the plant begins to suffer from cold stress. Prolonged exposure, especially to temperatures at or below freezing (32°F / 0°C), results in severe frost damage. Foliage may wilt, turn black, and become mushy as cell walls rupture due to ice crystal formation.
Spider plants can tolerate temperatures down to about 35°F (1.7°C) before significant damage or death, though even brief exposure below 40°F can still cause harm. They are not typically hardy in cold zones, which indicate a plant’s ability to survive winter.
Impact of Hot Temperatures
High heat and intense direct sunlight can also negatively affect outdoor spider plants. When temperatures consistently exceed 85°F (29°C), especially with strong sun, plants can exhibit signs of heat stress. This often manifests as leaf scorching, where foliage turns brown or crisp. Leaf tips may brown, and vibrant variegation can fade. Maintaining adequate soil moisture during hot spells helps the plant regulate its temperature through transpiration, mitigating heat stress.
Protecting Spider Plants from Temperature Extremes
Protecting outdoor spider plants from temperature extremes requires proactive measures. When cold temperatures are anticipated, bringing potted plants indoors is the best way to prevent damage. For ground-rooted plants, temporary covers like frost cloths or blankets insulate against cold snaps. Selecting sheltered locations, such as under an overhang or near a warm wall, offers protection from wind and cold.
During high heat, ample shade is crucial. Positioning them under trees, awnings, or using shade cloth reduces direct sun exposure and lowers ambient temperature. Consistent deep watering helps the plant cope with heat stress and prevents dehydration. Avoid placing them near heat-retaining surfaces like concrete patios or dark asphalt. Regularly monitoring weather forecasts and observing the plant’s appearance allows for timely adjustments.