Fertilising guide
How to fertilise Ivyleaf morning glory (Ipomoea hederacea)— schedule & NPK
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.
Growth habit: Annual twining vine
What fertiliser ivyleaf morning glory actually wants — and why
Ivyleaf morning glory is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula.
For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for ivyleaf morning glory: match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.
How often to feed ivyleaf morning glory, and which months
Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For ivyleaf morning glory:
On average soils, supplemental fertilisation is usually unnecessary and encourages excess foliage. On genuinely poor soils, apply a balanced fertiliser (10-10-10) once at planting. Avoid high-nitrogen feeds. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
The dormant-season rule matters more than the exact interval: skip feeding entirely when ivyleaf morning glory is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.
What strength to mix for ivyleaf morning glory
Half strength is the safe default for ivyleaf morning glory — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
Feeding always goes onto already-damp soil, never dry roots — water ivyleaf morning glory first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the ivyleaf morning glory watering schedule.
Signs you are over-feeding ivyleaf morning glory
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for ivyleaf morning glory:
- Brown, crispy leaf tips and edges with no sign of underwatering.
- A white, crusty salt deposit on the soil surface or pot rim.
- Weak, pale, stretched new growth that flops.
- Lower leaves yellow and drop while the soil is correctly watered.
Signs you are under-feeding ivyleaf morning glory
- Uniformly pale or yellow-green leaves, oldest first.
- Noticeably small new leaves and stalled growth in good light and season.
- A generally tired, lacklustre look despite correct watering and light.
If the symptoms point at watering, light or roots rather than nutrition, the full ivyleaf morning glory care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of ivyleaf morning glory with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Organic vs synthetic feeds for ivyleaf morning glory
Organic options
A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.
Synthetic / liquid feeds
A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.
Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.
Fertilising ivyleaf morning glory — frequently asked questions
What fertiliser does ivyleaf morning glory need?
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Ivyleaf morning glory is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
How often should I feed ivyleaf morning glory?
On average soils, supplemental fertilisation is usually unnecessary and encourages excess foliage. On genuinely poor soils, apply a balanced fertiliser (10-10-10) once at planting. Avoid high-nitrogen feeds. On average soils, supplemental fertilisation is usually unnecessary and encourages excess foliage. On genuinely poor soils, apply a balanced fertiliser (10-10-10) once at planting. Avoid high-nitrogen feeds. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
What strength of feed for ivyleaf morning glory?
Half strength is the safe default for ivyleaf morning glory — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding ivyleaf morning glory look like?
Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding ivyleaf morning glory year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.
Should I flush the soil of ivyleaf morning glory?
Flush the pot of ivyleaf morning glory with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Keep reading
- Ivyleaf morning glory care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water ivyleaf morning glory — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
- How to fertilise agastache 'blue fortune'
- How to fertilise veronicastrum virginicum 'fascination'
- How to fertilise veronica spicata 'royal candles'
- All 6887 fertilising guides in the Growli library