General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Minimum cold hardiness: Zone 9a -6.7 °C (20 °F) to -3.9 °C (25 °F)
Maximum recommended zone: Zone 11
Plant Height: 3-5 feet
Plant Spread: Approx. 5 feet
Leaves: Evergreen
Other: Attractive heart shaped leaves, bright green.
Flowers: Showy
Flower Color: Yellow
Other: 5 orange dots near center.
Bloom Size: 1"-2"
Flower Time: Summer
Late summer or early fall
Inflorescence Height: Flush with shrub
Foliage Mound Height: 3-5 feet
Suitable Locations: Xeriscapic
Uses: Provides winter interest
Propagation: Seeds: Other info

Image
Common names
  • San Marcos Hibiscus
Botanical names
  • Accepted: Gossypium harknessii
  • Synonym: Gossypium californicum

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Location:  
Date: 2015-02-27
Comments:
  • Posted by sheryl (Hot, hot, hot, Feenix, AZ - Zone 9b) on Dec 4, 2013 2:40 PM concerning plant:
    Some controversy as to whether or not this plant will withstand reflected heat.

    Does *not* like high organic matter - will look lousy in a typical nursery pot because of the soil, does much better in lean, rocky and well drained desert soil. Will get chlorotic with too much water, looks awful without enough. Prefers infrequent, deep watering, as is typical of native desert plants. Originates in Baja, Mexico.

    Is known to be salt tolerant, as well. Has a rounded shape, little pruning is needed.

    Closely related to common cotton plant.

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