Description
Wooly Thyme (Thymus pseudolanuginosus) is the softest, most tactile of the creeping thymes. Its dense, silver-grey, wooly foliage forms a low evergreen carpet that hugs the ground, suppresses weeds, and thrives on drought in lean, sunny, sharply drained spots.
Seed specifications
| Species | Common name | Leaf / blade | Zone | Height | Bloom | ASPCA |
|---|---|---|---|---|---|---|
| Thymus pseudolanuginosus | Wooly thyme | Wooly grey leaf | 4–8 | 1–3 in | Sparse pink | Non-toxic |
ASPCA: All Thymus species are listed by the ASPCA as non-toxic to dogs, cats, and horses.
Why choose Wooly Thyme Seed
Wooly thyme is grown for texture. Its fuzzy, silver-grey leaves — the ‘wooly’ comes from fine hairs — form a very low, dense mat that reads almost like a living rug, distinct from the greener creeping thymes. It stays flat, rarely topping 1–3 in.
Like all creeping thymes it is drought-tolerant once established and thrives in lean, gritty, sunny ground; NC State Extension documents Thymus germinating in about 14–21 days at 60–70°F from surface-sown seed. Expect a slow, root-building first year, then a filling Year 2 and a dense mat by Year 3.
It is happiest between pavers, in rockeries, and along hot, dry edges where turf will not grow, and it flowers sparsely in pink for pollinators. It dislikes wet shade and rich soil, both of which make it open and leggy. All Thymus species are ASPCA non-toxic.
Best uses
| Application | Suitability | Notes |
|---|---|---|
| Between pavers and stones | Excellent | Very low and soft; takes light foot traffic. |
| Hot, dry, sunny beds | Excellent | Thrives on drought and lean soil once established. |
| Rock and gravel gardens | Very Good | Loves sharp drainage and reflected heat. |
| Textural ground cover | Excellent | Distinct silver, fuzzy foliage. |
| Pollinator planting | Good | Sparse pink flowers draw some bees. |
| Wet or shaded ground | Poor | Rots in damp shade; needs full sun and drainage. |
Creeping thyme varieties compared
| Variety | Height | Look | Best for |
|---|---|---|---|
| Red creeping | 2–4 in | Magenta bloom | Bold colour, paths |
| Elfin | 1–2 in | Tightest, slow | Paver gaps |
| Wooly | 1–3 in | Silver, fuzzy | Texture, rockeries |
| White | 2–3 in | White bloom | Contrast, borders |
| Mother of thyme | 2–4 in | Purple-pink, vigorous | Dependable cover |
Zone & climate compatibility
| Zone | Performance | Notes |
|---|---|---|
| Zone 4–5 | Very Good | Hardy but slower to establish; give it full sun and sharp drainage. |
| Zone 6–7 | Excellent | Ideal range; strong bloom and fast Year-2 spread. |
| Zone 8–9 | Very Good | Thrives with drainage; avoid soggy soil and excessive summer irrigation. |
How to sow Wooly Thyme Seed
- Prepare a lean, gritty, weed-free bed in full sun. Thyme wants sharp drainage and a neutral-to-alkaline pH (about 6.5–8.0); work in grit if your soil holds water.
- Mix the fine seed with sand. Blend the tiny seed with dry, coarse sand at roughly 1 part seed to 4 parts sand so it broadcasts evenly.
- Surface-sow — do not cover. Scatter over the surface and press in; thyme seed is photoblastic and needs light to germinate. A useful rate is about 1/ per 5,000 sq ft (double for faster cover).
- Mist to keep moist. Water with a fine mist so seed is not washed away, keeping the surface damp until germination — typically 14–21 days at 60–70°F.
- Expect a slow first year. Year 1 is root-building with roughly 30–50% cover; Year 2 fills to 70–90% and blooms; Year 3 is a dense, self-maintaining mat.
- Sow in late spring once soil has warmed, or start indoors and set out plugs 8–12 in apart for faster establishment.
Care & maintenance
- Do not overwater established thyme; it prefers lean, dry conditions and rots in soggy soil.
- Give one post-bloom trim in mid-to-late summer to keep the mat tidy and dense.
- Weed by hand in Year 1 while the mat closes; once dense it suppresses most weeds itself.
- No feeding needed — rich soil and fertiliser make thyme leggy and open.
Sources
- NC State Extension — Thymus serpyllum profile: plants.ces.ncsu.edu
- Penn State Extension — establishing ground covers: extension.psu.edu
- Colorado State University Extension — ground covers: extension.colostate.edu
- ASPCA — toxic and non-toxic plants: www.aspca.org
Related thyme seed: Thymewalk Red Creeping Thymes Thymeturf Creeping Thyme Grass Lawn
Learn more: Creeping thyme lawn guide How fast does creeping thyme grow?
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