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Repotting guide

When & how to repot Angel's Trumpet (Brugmansia suaveolens)

Also called Angel's trumpet, Snowy angel's trumpet, Angel's tears.

More about angel's trumpet

About Angel's Trumpet

Brugmansia suaveolens · also called Angel's trumpet, Snowy angel's trumpet · flowering

Angel's trumpet is a fast-growing tropical shrub or small tree prized for huge, pendulous, intensely fragrant trumpet flowers. Give it full sun, rich moist soil, generous feeding, and protection below 10C. Every part is highly poisonous (tropane alkaloids), so the ASPCA and Pet Poison Helpline rate it toxic to pets and people.

Mature size: Container plants typically 1.2-4.5 m (4-15 ft) with pruning; in frost-free ground can reach 6-10 m (20-35 ft) tall and 1-3 m (3-10 ft) wide.

Watch for — Failure to flower: Blooms appear only after stems fork into the characteristic Y branching, which needs maturity. Too little sun, too little feed, or over-potting delays flowering — give full sun and regular high-potassium feed.

How to tell angel's trumpet needs repotting

Repotting on a calendar is less reliable than reading the plant. For angel's trumpet, watch for these signs:

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 angel's trumpet

Every 2–3 years; top-dress in the in-between years. Angel's Trumpet's growth habit — fast-growing, woody-stemmed evergreen shrub or small tree with a spreading, multi-branched canopy; branches characteristically fork (dichotomously) above which flowering begins. flowers are large, pendulous, trumpet-shaped, and powerfully fragrant — especially in the evening. — sets the pace. Angel's trumpet is a fast-growing tropical shrub or small tree prized for huge, pendulous, intensely fragrant trumpet flowers. Give it full sun, rich moist soil, generous feeding, and protection below 10C. Every part is highly poisonous (tropane alkaloids), so the ASPCA and Pet Poison Helpline rate it toxic to pets and people.

What size pot to step angel's trumpet up to

Move up exactly one pot size. A heavy angel's trumpet 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 angel's trumpet

Early spring, just as new growth restarts, is the ideal window for angel's trumpet. 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 angel's trumpet

  1. Consider top-dressing first. If angel's trumpet 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.
  2. 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.
  3. 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.
  4. Repot at the same depth. Add fresh rich, loam-based, free-draining potting mix or humus-rich garden soil beneath and around the rootball, keeping the original soil line. Firm it so the trunk is stable and upright.
  5. Water and leave it put. Water thoroughly, then leave angel's trumpet in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave angel's trumpet 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 angel's trumpet

Angel's Trumpet wants rich, loam-based, free-draining potting mix or humus-rich garden soil. Prefers fertile, organically rich, moisture-retentive but well-drained soil. Use a loam-based (peat-free) compost in containers; ensure drainage holes, as roots rot in standing water. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting angel's trumpet — frequently asked questions

How often should you repot angel's trumpet?

Every 2–3 years; top-dress in the in-between years for angel's trumpet. Fully repot angel's trumpet 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 rich, loam-based, free-draining potting mix or humus-rich garden soil. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does angel's trumpet need?

Move up exactly one pot size. A heavy angel's trumpet 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. Use our pot size calculator to size it from the plant's current pot and root spread.

When is the best time of year to repot angel's trumpet?

Early spring, just as new growth restarts, is the ideal window for angel's trumpet. 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.

Should you top-dress or fully repot angel's trumpet?

For a big, heavy angel's trumpet, 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 angel's trumpet after repotting?

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

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