How to Grow Custard Apple
Annona squamosa
Custard apple (Annona squamosa) is a tropical fruit tree that cannot survive outdoors in the UK and must be grown in a heated greenhouse or large conservatory with a minimum winter temperature of around 15°C. It is semi-deciduous, briefly dropping leaves before flowering. Hand pollination is usually necessary because the natural pollinators are absent in Britain. Fruit splits when ripe and should be eaten promptly — the sweet, custard-like flesh is the reward for the extra care this tree demands.
Yearly Lifecycle
Care Essentials
Feed fortnightly with a balanced liquid fertiliser from spring to autumn. Stop feeding during the brief dormant period before flowering restarts.
Watch For
- Mealybug — white cottony masses in leaf axils and on stems
- Scale insects on stems and leaf undersides
- Red spider mite in dry greenhouse conditions
- Root rot from overwatering or poor drainage
- Anthracnose in humid conditions
Track your Custard Apple care schedule — pruning, feeding, and seasonal tasks
Start planning freeCare Requirements
☀️ Light
Bright filtered light in a heated greenhouse
Needs bright, indirect light or filtered sun in a heated greenhouse. Avoid scorching direct midday sun through glass.
💧 Watering
Moist in growth, dry during dormant rest
Water freely during the growing season, keeping compost evenly moist. Reduce significantly during the brief deciduous rest period before flowering.
🌱 Fertilizing
Balanced liquid feed fortnightly, spring to autumn
Feed fortnightly with a balanced liquid fertiliser from spring to autumn. Stop feeding during the winter rest period.
✂️ Pruning
Light winter pruning to shape and encourage new growth
Prune lightly in late winter to maintain shape and remove dead or crossing branches. Custard apple flowers on new growth, so moderate pruning encourages fruiting wood.
❄️ Overwintering
Heated glass essential, minimum 15°C in winter
Must be kept in a heated greenhouse or conservatory with a minimum temperature of 15°C. Cannot tolerate any frost or prolonged cold.
Growing Tips
Grow under heated glass
Custard apple needs constant warmth and cannot tolerate any frost. A heated greenhouse or conservatory with good ventilation is essential in the UK.
Hand pollinate for fruit
Use a small brush to transfer pollen between flowers in the morning. Without hand pollination, fruit set is unreliable in the absence of natural beetle pollinators.
Reduce watering during leaf drop
The tree is semi-deciduous and rests briefly before flowering. Cut back watering during this dormant period and resume as new growth appears.
Harvest when fruit begins to split
Ripe custard apples crack slightly along the segments and feel soft. Pick promptly and eat within a day or two as the flesh deteriorates quickly.
Pests & Diseases
Pest Mealybug
Identification: White cottony masses in leaf axils, on stems, and around developing fruit
- Dab with a cotton bud soaked in methylated spirit
- Introduce Cryptolaemus ladybird as biological control under glass
- Spray with fatty acid or plant oil-based insecticide
Pest Scale Insects
Identification: Small brown or white bumps on stems and leaf undersides, sticky honeydew and sooty mould
- Wipe off with a cloth dipped in soapy water
- Introduce parasitic wasps as biological control
- Spray with plant oil-based insecticide
Pest Red Spider Mite
Identification: Fine webbing on leaf undersides, stippled yellowing leaves, tiny mites visible with a hand lens
- Increase humidity by misting regularly
- Introduce predatory mite Phytoseiulus persimilis
- Spray with fatty acid-based miticide
Disease Root Rot Phytophthora spp.
Symptoms: Yellowing leaves, wilting despite moist soil, dark mushy roots, plant collapse
Treatment: Remove from pot, trim rotten roots, repot in fresh free-draining compost. Reduce watering
Prevention: Use well-drained compost. Allow the top layer to dry slightly between waterings
Disease Anthracnose Colletotrichum gloeosporioides
Symptoms: Dark sunken spots on fruit, black lesions on leaves, premature fruit drop
Treatment: Remove and destroy affected fruit and leaves. Improve air circulation
Prevention: Avoid overhead watering. Ensure good ventilation in the greenhouse
Spacing & Planting
| Plant spacing | 600 cm |
| Row spacing | 700 cm |
| Mature height | 500 cm |
| Mature spread | 400 cm |
Also called sugar apple or sweetsop. Semi-deciduous Annona family tree. Hand pollination often needed. Fruits split when ripe.
Log Custard Apple in your garden — track growth, care, and harvests year after year
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