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Rosaceae TREE OUTDOOR Placement Primary: Food Ornamental

Greengage

Prunus domestica subsp. italica

Identified By Marcs

The greengage is a cultivated variety of the plum tree, highly prized for its exceptionally sweet, luscious fruit. Originating likely in the Middle East and later popularized in France, this deciduous tree features serrated green-oval leaves, delicate white springtime blossoms, and yields small to medium round drupes with a characteristic greenish-yellow skin and flesh when fully ripe. Greengages thrive in temperate climates requiring chilling hours, and they demand well-drained fertile soils alongside ample sunlight to produce the highest quality sweet harvests. They are traditionally consumed fresh, baked into tarts, or processed into jams and preserves.

Also known as: Reine Claude Green Gage Plum

Toxicity & Safety

Is Greengage toxic to pets?

Yes, toxic to pets.

Greengage trees, like many members of the Prunus genus, contain cyanogenic glycosides in their leaves, stems, bark, and the seeds (pits) of the fruit. If pets ingest these parts, it can lead to severe cyanide poisoning, exhibiting symptoms such as difficulty breathing, hyperventilation, bright red gums, shock, and potentially fatal consequences if immediate veterinary assistance is not sought out.

Is Greengage toxic to humans?

Yes, toxic to humans.

While the fleshy pulp of the greengage fruit is entirely edible and delicious, the pits, leaves, and stems contain compounds that break down into hydrogen cyanide when ingested or damaged. Accidental crushing and swallowing of the seed kernels can cause acute cyanide poisoning, leading to gastrointestinal distress, weakness, confusion, and more severe systemic issues requiring prompt medical attention.

Is Greengage safe during pregnancy?

Generally considered safe during pregnancy.

Growth & Dimensions

Height 300 - 600 cm
Width 250 - 450 cm
Growth Rate Moderate
Care Level Moderate
Lifespan Perennial

Ideal Environment

Temperature -20°C - 35°C
Sunlight Hours 6 - 10 hrs/day
Sun Exposure Full sun
Soil pH 6 - 7.5
Watering Interval 7 - 14 days
Humidity 40.00% - 70.00%
USDA Zone 4 - 9

Temperate Zones

Climate: Thrives in temperate climates featuring distinct seasonal changes with cold winter chilling periods necessary for breaking dormancy and stimulating proper spring flowering.

Soils: Loam Clay loam Sandy loam
Annual Rainfall: 600 - 1200 mm

Native Regions

Europe
Southwest Asia
Caucasus

How to Care for Greengage

How should I handle watering your greengage tree?

Provide deep, regular watering especially during the dry summer months when fruit is developing. Young trees need consistent moisture weekly, while established trees tolerate brief dry spells but benefit greatly from deep soaking every 10 to 14 days to prevent fruit drop and splitting.

How should I handle sunlight and location?

Plant your greengage tree in an open location that receives a minimum of six to eight hours of direct, unfiltered sunlight daily. Adequate sunlight exposure is essential for maximizing sugar content in the ripening fruit and preventing fungal diseases by keeping the foliage dry.

How should I handle soil and fertilization requirements?

Ensure the tree is planted in fertile, loamy, well-draining soil with a neutral to slightly alkaline pH. Apply a balanced organic fruit tree fertilizer in early spring just before new growth emerges, avoiding excessive nitrogen which leads to lush leaf growth at the expense of fruit production.

How should I handle pruning and maintenance?

Prune your greengage tree annually during late winter while it is fully dormant to maintain an open center shape that allows light penetration and air circulation. Remove any dead, diseased, crossing, or weak branches, and sterilize your pruning tools between cuts to prevent pathogen transmission.

How to Propagate Greengage

How to propagate Greengage by grafting?

Select certified disease-free rootstocks suitable for your local soil conditions and climate type. Obtain healthy scion wood from mature, high-yielding greengage trees during the dormant winter season. Perform whip and tongue or cleft grafting techniques in early spring just as the rootstock begins to break dormancy, ensuring a tight cambium layer alignment. Wrap the graft union securely with grafting tape and seal with pruning compound to retain moisture until callus tissue forms and successful union takes place.

Common Diseases & Pests of Greengage

What is Silver Leaf Fungus and how is it treated?

Fungal
Symptoms:

Leaves develop a distinct silvery sheen, followed by branch dieback and the appearance of bracket-like fruiting bodies of the fungus on dead or dying wood surfaces during damp autumn weather conditions.

Treatment:

Prune out all infected branches well below the visible symptoms during dry summer weather when the fungal spores are less active, and apply a wound sealant to protect large cuts from reinfection.

Prevention:

Avoid pruning stone fruit trees during wet winter months when fungal spores spread easily through the air, and always sanitize cutting tools thoroughly before moving between different trees.

What is Aphids and how is it treated?

Pest
Symptoms:

Clusters of small soft-bodied insects gather on tender new shoots and underside of leaves, causing curling, distortion, stunted growth, and the excretion of sticky honeydew that attracts ants and promotes sooty mold.

Treatment:

Spray infested foliage thoroughly with insecticidal soap, horticultural oils, or introduce beneficial predatory insects such as ladybugs and lacewings to naturally control and reduce the aphid populations.

Prevention:

Monitor new spring growth regularly, avoid over-fertilizing with high nitrogen products which encourage succulent growth attractive to pests, and encourage local populations of beneficial predatory garden insects.

Properties & Benefits of Greengage

Bears Fruit

Uses & Health Benefits

What are the benefits of rich source of dietary antioxidants in Greengage?

Greengages are packed with powerful antioxidant compounds, including various polyphenols and vitamin C, which help combat oxidative stress caused by free radicals in the body. Regular consumption supports overall cellular health, helps reduce systemic inflammation, and contributes to long-term chronic disease prevention while supporting vibrant skin and immune function.

Precautions: Consume as part of a balanced diet; excessive intake of stone fruits due to sorbitol content may cause mild digestive upset in sensitive individuals.

Key Nutrients / Compounds

Vitamin C moderate 9.5 mg / 100g
Potassium moderate 157 mg / 100g
Dietary Fiber high 2.1 g / 100g

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