Repotting guide

When & how to repot Silver Queen Thyme (Thymus x citriodorus 'Silver Queen')

Also called Silver Queen thyme, silver lemon thyme.

More about silver queen thyme

About Silver Queen Thyme

Thymus x citriodorus 'Silver Queen' · also called Silver Queen thyme, silver lemon thyme · herb

Silver Queen is a lemon-scented thyme with small grey-green leaves edged in creamy white, forming a low, spreading evergreen mound. Both culinary and ornamental, it carries pale pink-mauve summer flowers loved by bees. This sun-loving, drought-hardy Mediterranean herb thrives in poor, sharply drained soil and is ideal for edging, herb beds and gravel gardens.

Mature size: 20-30 cm tall and 30-40 cm wide.

Watch for — Root rot from overwatering: Blackening, dieback and collapse in wet or heavy soil. Provide sharp drainage, water sparingly, and avoid sitting in winter wet.

How to tell silver queen thyme needs repotting

Repotting on a calendar is less reliable than reading the plant. For silver queen thyme, watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot silver queen thyme

Every 2–3 years, into bone-dry mix. Silver Queen Thyme's growth habit — low, spreading, woody-based evergreen subshrub forming a dense, mounding-to-trailing mat of fine variegated foliage. — sets the pace. Silver Queen is a lemon-scented thyme with small grey-green leaves edged in creamy white, forming a low, spreading evergreen mound. Both culinary and ornamental, it carries pale pink-mauve summer flowers loved by bees. This sun-loving, drought-hardy Mediterranean herb thrives in poor, sharply drained soil and is ideal for edging, herb beds and gravel gardens.

What size pot to step silver queen thyme up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Silver Queen Thyme stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot silver queen thyme

Spring or summer, while silver queen thyme is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting silver queen thyme

Repot dry. Do not water silver queen thyme for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty light, gritty, free-draining soil, neutral to alkaline ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set silver queen thyme at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep silver queen thyme completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for silver queen thyme

Silver Queen Thyme wants light, gritty, free-draining soil, neutral to alkaline. Thrives in poor, sandy or stony ground and tolerates chalk. Heavy, moisture-retentive soil rots the shallow roots; add grit and plant high in clay. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting silver queen thyme — frequently asked questions

How often should you repot silver queen thyme?

Every 2–3 years, into bone-dry mix for silver queen thyme. Repot silver queen thyme every 2–3 years into a snug pot of light, gritty, free-draining soil, neutral to alkaline, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does silver queen thyme need?

When is the best time of year to repot silver queen thyme?

Should you water silver queen thyme after repotting?

No — not straight away. Repot silver queen thyme into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise silver queen thyme after repotting?

Not immediately. Wait about 3 weeks after repotting silver queen thyme. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.