Giant orchid
Himantoglossum robertianum
The Giant Orchid is a rare Mediterranean terrestrial orchid that requires well-drained, alkaline soil and full sun to thrive. It grows from underground tubers and follows a cool-season growth cycle, going dormant in summer heat. Best suited for specialist rock gardens or Mediterranean-style outdoor beds rather than containers or indoor cultivation.
Care Level
High
Sun
Full Sun
Water
Moderate
Growth Rate
Moderate
Mature Height
—
Life Cycle
Perennial
Spacing
12″
Watering Schedule
Every 7-10 Days During Active Growth; Reduce In Summer Dormancy • Water Moderately At The Base, Keeping Soil Evenly Moist But Never Waterlogged
Soil pH
7 – 7.5
Temperature
-30° – 95°F
Native to
Attracts
Sources
Data: trefle
Image: trefle.io — Taken Jan 20, 2021 by Bogert Becky (cc-by-sa)
No nurseries currently have this species in stock.