Greek mountain tea
Sideritis syriaca
A low, drought-loving Mediterranean herb grown for its woolly silver-grey rosettes of soft, felted leaves and its stiff summer spikes of small, soft-yellow flowers cupped in densely woolly bracts - the plant known as Greek mountain tea or ironwort. It is a tough alpine and rock-garden subject that wants hot, dry, very sharply drained ground and full sun, and rots in wet or rich soil; it is only borderline hardy. POWO (Kew) records Sideritis syriaca as native to the eastern Mediterranean - Crete, the Levant, and Türkiye. The dried leaves and flower spikes make the traditional caffeine-free Greek herbal infusion long valued as a folk remedy for colds and coughs, so it is parts-edible as a tea but is grown as a herb rather than a food crop. The soft-yellow summer spikes are a good bee plant.
Climate fit: narrow (30/100)
Border
Edible
Pollinator
Container
Light
Full sun
Water
Low water
Mature size
8-18" tall · 12" apart
Hardy in zones
6a-9b
cold to frosty winters
Native in Illinois
No
Related products
Sponsored
Shop gardening supplies for Greek mountain tea on Amazon ->
Plotwright may earn a commission from purchases made through this link, at no extra cost to you.
Insect-pollinated, and a good bee plant: the soft-yellow, woolly-bracted summer spikes are a genuine nectar source worked by honey bees and solitary bees such as leafcutter and mason bees.
Cold hardiness
These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
✓
Well-suited today and still thriving in 2050.
Heat tolerance
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...
Where this plant fits
Suitable across 30 ecoregions - 26 climate-resilient through 2070 · 1 suited today · 3 newly possible by 2070. Best matches first.
Similar plants
Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Educator packet
Plant packet
Greek mountain tea educator packet
A low, drought-loving Mediterranean herb grown for its woolly silver-grey rosettes of soft, felted leaves and its stiff summer spikes of small, soft-yellow flowers cupped in densely woolly bracts - the plant known as Greek mountain tea or ironwort. It is a tough alpine and rock-garden subject that wants hot, dry, very sharply drained ground and full sun, and rots in wet or rich soil; it is only borderline hardy. POWO (Kew) records Sideritis syriaca as native to the eastern Mediterranean - Crete, the Levant, and Türkiye. The dried leaves and flower spikes make the traditional caffeine-free Greek herbal infusion long valued as a folk remedy for colds and coughs, so it is parts-edible as a tea but is grown as a herb rather than a food crop. The soft-yellow summer spikes are a good bee plant.
Scientific name
Sideritis syriaca
Plant type
herb
Hardiness
6a-9b
Light
full-sun
Moisture
low
Spacing
12 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Greek mountain tea (Sideritis syriaca). Retrieved 2026, August 20, from https://plotwright.com/plants/sideritis-syriaca
Sources used for this record
This record is compiled from the sources below.





