Repotting guide

When & how to repot Day-blooming Jasmine (Cestrum diurnum)

Also called Day-blooming Jasmine, Day Jessamine, King of the Day, White Chocolate Jasmine.

More about day-blooming jasmine

About Day-blooming Jasmine

Cestrum diurnum · also called Day-blooming Jasmine, Day Jessamine · tropical

Day-blooming Jasmine is a fast-growing evergreen shrub in the nightshade family that bears clusters of white tubular flowers with a sweet vanilla-like scent during daylight hours — the daytime counterpart to Cestrum nocturnum. It thrives in full sun to part shade and moist, well-draining soil. All parts are severely toxic, particularly the berries, and the plant is invasive in some regions.

Mature size: 1.5–3 m (5–10 ft) in cultivation; can reach 4–5 m (13–16 ft) in frost-free Florida conditions; spread 0.6–1 m (2–3 ft)

Watch for — Leggy, open habit without pruning: Plants quickly become tall and bare at the base if not pruned regularly. Hard-prune in early spring by up to one-third to stimulate bushier, more compact regrowth. Plants respond well to pruning but flower only on current-season wood, so avoid pruning once buds are visible.

How to tell day-blooming jasmine needs repotting

Repotting on a calendar is less reliable than reading the plant. For day-blooming jasmine, watch for these signs:

Thick roots out of the drainage holes, or circling the surface and lifting the plant.
The pot dries out unusually fast and day-blooming jasmine wilts between waterings it used to shrug off.
The plant is visibly top-heavy and tips over easily.
Stalled growth and small new leaves over a full season — though with a big specimen, top-dressing is often the better first response before a full 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 day-blooming jasmine

Every 2–3 years; top-dress in the in-between years. Day-blooming Jasmine's growth habit — upright, evergreen shrub or small multi-stemmed tree — sets the pace. Day-blooming Jasmine is a fast-growing evergreen shrub in the nightshade family that bears clusters of white tubular flowers with a sweet vanilla-like scent during daylight hours — the daytime counterpart to Cestrum nocturnum. It thrives in full sun to part shade and moist, well-draining soil. All parts are severely toxic, particularly the berries, and the plant is invasive in some regions.

What size pot to step day-blooming jasmine up to

Move up exactly one pot size. A heavy day-blooming jasmine dropped into a vastly bigger pot sits in a reservoir of wet soil its roots cannot reach, which rots them and destabilises the plant. In the years between repots, lift off and replace the top 3–5 cm of soil (top-dressing) instead — it refreshes nutrients without the shock of a full repot.

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 day-blooming jasmine

Early spring, just as new growth restarts, is the ideal window for day-blooming jasmine. 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 day-blooming jasmine

Consider top-dressing first. If day-blooming jasmine is not badly root-bound, scrape off and replace the top 3–5 cm of soil instead — far less shock for a big plant that hates moving.
Get help and one size up. For a full repot, choose a pot just one size larger. A heavy plant needs two people and a stable, free-draining pot.
Ease it out on its side. Lay the plant down, slide the pot off, and gently loosen the outer roots. Do not bare-root a mature specimen.
Repot at the same depth. Add fresh well-draining loam or sandy loam beneath and around the rootball, keeping the original soil line. Firm it so the trunk is stable and upright.
Water and leave it put. Water thoroughly, then leave day-blooming jasmine in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave day-blooming jasmine in exactly the same spot and light it was in before — moving and repotting at the same time is what makes a big specimen drop leaves. Water it in well, then let the top of the soil dry before watering again so the larger volume of fresh soil does not stay sodden. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for day-blooming jasmine

Day-blooming Jasmine wants well-draining loam or sandy loam. Tolerates a range of soil types from sandy to clay loam, but performs best in fertile, well-draining loam. Prefers a slightly acidic to neutral pH of 6.0–7.0. Enrich poor soils with compost before planting. In containers, use a loam-based mix with added perlite. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting day-blooming jasmine — frequently asked questions

How often should you repot day-blooming jasmine?

Every 2–3 years; top-dress in the in-between years for day-blooming jasmine. Fully repot day-blooming jasmine only every 2–3 years; in the in-between years just top-dress the top 3–5 cm of soil. Step up one pot size in spring with well-draining loam or sandy loam. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does day-blooming jasmine need?

When is the best time of year to repot day-blooming jasmine?

Should you top-dress or fully repot day-blooming jasmine?

For a big, heavy day-blooming jasmine, top-dressing — replacing the top 3–5 cm of soil — is the gentler option most years, with a full repot only every 2–3 years. A mature specimen sulks and drops leaves when fully repotted, so do it as rarely as the roots allow.

Should you fertilise day-blooming jasmine after repotting?

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