Spike dropseed Plant Care
Sporobolus contractus Hitchc.
Updated · Sources · How we source care data
Sporobolus contractus is a species of grass known by the common name spike dropseed. It is native to western North America, including the southwestern United States and northern Mexico.
Every 7–10 days
Full sun to partial shade
60–85°F
40–70%
At a glance
How do you care for Spike dropseed?
Water Spike dropseed every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–85°F (16–29°C) and 40–70% humidity. Fertilize it every 8 months during the growing season.
Where Is the Spike dropseed Native To?
What Is the Spike dropseed?
Spike dropseed (Sporobolus contractus) belongs to the Poaceae family within the Sporobolus genus. Spike dropseed is native to western North America, including the southwestern United States and northern Mexico. Spike dropseed is also known as Contracted dropseed.
Spike dropseed displays an upright, clumping grass growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Spike dropseed produces small inconspicuous flowers on tall spikes.
Leaf size: approximately 12 inches.
How Often Should You Water a Spike dropseed?
Sporobolus contractus requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Spike dropseed Need?
Spike dropseed thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Spike dropseed Prefer?
Sporobolus contractus grows best at temperatures of 60–85°F. Spike dropseed prefers humidity levels of 40–70%.
Temperature
60–85°F
Humidity
40–70%
What Soil Mix Works Best for a Spike dropseed?
Well-draining sandy loam with added organic matter. Good drainage is essential for Spike dropseed to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Spike dropseed?
Feed Spike dropseed every 8 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 8 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Spike dropseed?
Repot every 1-2 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Spike dropseed?
Spike dropseed can be propagated through division, seeds. Similar propagation techniques also apply to foxtail dropseed plant care, which shares the same genus.
Is the Spike dropseed Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Spike dropseed, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Spike dropseed?
Spike dropseed is susceptible to grasshoppers, aphids, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Spike dropseed Need?
Spike dropseed grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Spike dropseed is native to western North America, including the southwestern United States and northern Mexico. In cooler regions, grow Spike dropseed as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Spike dropseed is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Sporobolus genus — compare its care with other Sporobolus species on PlantoScan.
Sporobolus is part of the Poaceae plant family — browse all Poaceae genera and species.
Spike dropseed thrives in bright light and direct sun — see other bright-light plants.
More Sporobolus Species
Other Sporobolus species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Sporobolus contractus Hitchc., family Poaceae (first published in Amer. J. Bot. 2: 303 (1915)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Spike dropseed, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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