Repotting guide

When & how to repot Ivyleaf morning glory (Ipomoea hederacea)

Also called Ivyleaf morning glory, Ivy-leaf morning glory.

More about ivyleaf morning glory

About Ivyleaf morning glory

Ipomoea hederacea · also called Ivyleaf morning glory, Ivy-leaf morning glory · flowering

Ivyleaf morning glory is a vigorous warm-season annual climber with distinctive three-lobed, ivy-shaped leaves and sky-blue to purple funnel flowers that open in the morning. Thrives in full sun and tolerates poor soils, making it easy to establish. Seeds are toxic to pets and humans. Considered a noxious agricultural weed in some US states.

Mature size: 1–2.5 m (3–8 ft) in a season

Watch for — Root rot from overwatering: This species is particularly sensitive to wet soil. Wilting despite moist soil usually indicates root rot. Ensure sharp drainage and reduce watering frequency; affected plants are difficult to recover.

How to tell ivyleaf morning glory needs repotting

Repotting on a calendar is less reliable than reading the plant. For ivyleaf morning glory, watch for these signs:

Roots circling the bottom of the module or pot, or poking out of the drainage holes.
The seedling dries out within a day and growth has visibly stalled.
Roots are white and matted in a tight spiral when you tip the plant out.
It has outgrown its current container for the stage of the season — pot ivyleaf morning glory on before it becomes hard root-bound.

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 ivyleaf morning glory

Pot on seedlings as they grow; not a perennial repot. Ivyleaf morning gloryis grown for one season, so the question is really “how often to pot on” — keep moving it up before the roots circle. Annual twining vine.

What size pot to step ivyleaf morning glory up to

Pot ivyleaf morning glory on gradually — a seedling jumped straight into a huge pot sits in cold, wet, airless soil and stalls. Step up one or two sizes at a time as the roots fill each container, finishing in a large final pot or the ground. The aim is roots that never circle and never check.

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 ivyleaf morning glory

Pot ivyleaf morning glory on through the active growing season, whenever roots fill the current container — there is no single date, just "before it becomes root-bound". Avoid potting on during a cold snap.

Step-by-step: repotting ivyleaf morning glory

Pot on before it is root-bound. Check ivyleaf morning glory regularly; move it up as soon as roots reach the edge of the cell or pot, not after they have circled.
Step up one or two sizes. Choose the next container up — not a giant one. Cold, wet, unused soil around a small root system stalls seedlings.
Knock it out gently. Support the stem, tip the pot, and ease the rootball out without breaking it. A little teasing of circled roots at the base is fine.
Pot into rich mix. Set it into fresh well-draining loamy to sandy soil at the same depth (tomatoes are the exception — they can go deeper to root along the stem).
Water in and grow on. Water well, keep it in good light, and resume feeding once it is established and growing again.

Aftercare

Water ivyleaf morning glory in well and keep it in bright light; a freshly potted-on seedling can wilt for a day while roots settle, so do not overcompensate by drowning it. Do not fertilise for about 1 week — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for ivyleaf morning glory

Ivyleaf morning glory wants well-draining loamy to sandy soil. Grows well in a range of soils from poor sandy to moderately fertile loam, as long as drainage is adequate. Rich, heavy clay soils promote lush foliage but poor flowering and increase disease risk. Organic matter improves moisture retention in very sandy sites. pH 6.0–7.0. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting ivyleaf morning glory — frequently asked questions

How often should you repot ivyleaf morning glory?

Pot on seedlings as they grow; not a perennial repot for ivyleaf morning glory. Ivyleaf morning glory is a seasonal crop, so you pot it on as a growing plant rather than repotting a perennial. Step seedlings up gradually into well-draining loamy to sandy soil so the roots never circle the cell, ending in a large final container. A root-bound transplant stalls and never fully recovers.

What size pot does ivyleaf morning glory need?

When is the best time of year to repot ivyleaf morning glory?

Can you put ivyleaf morning glory straight into a much bigger pot?

No. Even a fast-growing ivyleaf morning glory should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise ivyleaf morning glory after repotting?

Not immediately. Wait about 1 week after repotting ivyleaf morning glory. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.