Repotting guide

When & how to repot Stanhopea tigrina (Stanhopea tigrina)

Also called Tiger Stanhopea, Inverted Flower Orchid.

More about stanhopea tigrina

About Stanhopea tigrina

Stanhopea tigrina · also called Tiger Stanhopea, Inverted Flower Orchid · flowering

Stanhopea tigrina is a dramatic Mexican epiphyte whose large, heavily fragrant maroon-and-cream flowers push downward through the potting medium, so it must be grown in a slatted basket. Blooms are short-lived but spectacular, opening in summer with a powerful chocolate-vanilla scent. It needs a basket, bright filtered light, abundant water, and high humidity in growth.

Mature size: Pseudobulbs 5-8 cm with leaves to 30-50 cm; pendant flower spikes carrying blooms up to 15 cm across that last only a few days.

Watch for — Spikes rot inside the pot: The classic mistake of using a solid pot. Downward-growing flower spikes must exit a slatted basket; trapped spikes blacken and die before opening.

How to tell stanhopea tigrina needs repotting

Repotting on a calendar is less reliable than reading the plant. For stanhopea tigrina, 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 stanhopea tigrina) 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 stanhopea tigrina

Only every 2–4 years, when genuinely crowded. Stanhopea tigrina 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. Sympodial epiphyte forming clustered ribbed pseudobulbs, each with a single large pleated leaf. Pendant flower spikes grow downward out of the base, emerging through the bottom of the basket to carry several large, intensely fragrant, short-lived blooms..

What size pot to step stanhopea tigrina up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Stanhopea tigrina 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 stanhopea tigrina 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 stanhopea tigrina

Early spring, just as new growth restarts, is the ideal window for stanhopea tigrina. 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 stanhopea tigrina

Confirm it actually needs it. Slide stanhopea tigrina 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 stanhopea tigrina 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 coarse mix in a slatted hanging basket, 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 stanhopea tigrina 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 stanhopea tigrina

Stanhopea tigrina wants coarse mix in a slatted hanging basket. Grow only in an open slatted wood or wire basket lined with sphagnum or coir over coarse bark, because the flower spikes burrow downward and must exit through the bottom; a solid pot kills the blooms. Use a moisture-retentive but airy mix and repot infrequently to avoid disturbing the spike-laden roots. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting stanhopea tigrina — frequently asked questions

How often should you repot stanhopea tigrina?

Only every 2–4 years, when genuinely crowded for stanhopea tigrina. Only repot stanhopea tigrina 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 coarse mix in a slatted hanging basket. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does stanhopea tigrina need?

When is the best time of year to repot stanhopea tigrina?

Does stanhopea tigrina like to be root-bound?

Yes — stanhopea tigrina 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 stanhopea tigrina after repotting?

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