Repotting guide

When & how to repot Sand Everlasting (Helichrysum arenarium)

Also called Sand Everlasting, Sandy Everlasting, Common Yellow Everlasting, Dwarf Everlast.

More about sand everlasting

About Sand Everlasting

Helichrysum arenarium · also called Sand Everlasting, Sandy Everlasting · flowering

Helichrysum arenarium is a compact, clump-forming herbaceous perennial native to sandy soils across Europe and Central Asia, from Germany eastward through the Russian steppe to China. It produces erect, white-woolly stems carrying clusters of small, papery, golden-yellow flowerheads in late summer, and is also valued in phytomedicine for its flavonoid content. The key care point is providing very free-draining, lean sandy or chalky soil in full sun; it is intolerant of waterlogging and shade. This species is not known to be harmful to cats or dogs.

Mature size: 15–30 cm tall and 20–30 cm wide.

Watch for — Root rot from overwatering: The plant is highly sensitive to wet soil; overwatering or poor drainage causes rapid root and crown decay. Ensure the growing medium dries completely between waterings.

How to tell sand everlasting needs repotting

Repotting on a calendar is less reliable than reading the plant. For sand everlasting, watch for these signs:

Roots spiralling thickly out of the drainage holes or pushing the whole plant up out of the pot.
The pot is so packed that water runs straight through in seconds and barely wets the soil.
It has split a plastic pot, or the rootball is a solid mass with almost no soil left when you slide it out.
Growth and (for sand everlasting) flowering have clearly stalled despite good light and feeding — but remember this plant likes being snug, so a little crowding alone is not a reason to repot.

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 sand everlasting

Only every 2–4 years, when genuinely crowded. Sand Everlasting is one of the plants that genuinely prefers a snug pot — it grows and flowers better with its roots a little restricted, so resist the urge to repot it on schedule. Erect, clump-forming herbaceous perennial with white-woolly stems and lance-shaped, grey-green leaves..

What size pot to step sand everlasting up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Sand Everlasting positively prefers a snug pot: it flowers and grows better when the roots are a little restricted. The single biggest repotting mistake here is over-potting — dropping sand everlasting into a pot two or three sizes up. All that surplus soil holds water the small root system cannot use, stays cold and wet, and rots the roots within weeks. When in doubt, choose the smaller pot.

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 sand everlasting

Early spring, just as new growth restarts, is the ideal window for sand everlasting. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting sand everlasting

Confirm it actually needs it. Slide sand everlasting out and check the roots. Only continue if it is genuinely packed — this plant prefers a snug pot, so if there is still soil and room, put it straight back.
Pick a pot only one size up. Choose a pot just 2–3 cm wider with good drainage. Resist anything bigger; over-potting is the main killer here.
Ease it out gently. Water lightly the day before, then tip sand everlasting out, supporting the base. Tease the outer roots free only enough to stop them circling.
Repot at the same depth. Add a layer of fresh lean, sandy or chalky, sharply drained, set the plant so the soil line sits exactly where it did before, and backfill around the sides, firming lightly.
Settle it in. Water once to settle the soil, then let it sit. Hold off on more water until the top of the soil dries — fresh soil around a small root system stays wet for a while.

Aftercare

Because the new soil holds more water than the old crammed rootball did, ease right back on watering — let the top of the soil dry before you water sand everlasting again, or you will rot the roots in the very pot you just moved it to. Keep it out of harsh direct sun for a fortnight. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for sand everlasting

Sand Everlasting wants lean, sandy or chalky, sharply drained. Native to stabilised sand dunes and dry grassland; add coarse sand or fine grit to heavier soils to mimic its natural habitat. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting sand everlasting — frequently asked questions

How often should you repot sand everlasting?

Only every 2–4 years, when genuinely crowded for sand everlasting. Only repot sand everlasting every 2–4 years, and only when it is genuinely root-bound — it flowers and grows best slightly crowded. Step up just one pot size in spring using lean, sandy or chalky, sharply drained. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does sand everlasting need?

When is the best time of year to repot sand everlasting?

Does sand everlasting like to be root-bound?

Yes — sand everlasting genuinely flowers and grows best when slightly pot-bound, so do not rush to repot it. The mistake to avoid is over-potting into a much larger pot: the excess soil stays wet, the roots cannot use it, and the plant rots. Only repot every few years and only one snug size up.

Should you fertilise sand everlasting after repotting?

Not immediately. Wait about 4 weeks after repotting sand everlasting. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.