Complete Guide to Growing Plum Trees
1. Choosing the Right Plum Variety
There are two main types of plums, each suited for different climates and uses.
European Plums (Prunus domestica)
Taste: Sweet, firm, often used for fresh eating, cooking, and drying.
Examples: Stanley, Italian Prune, and European Damson.
Best suited for: USDA Zones 5–8.
Pollination: Many are self-pollinating, but a second plum tree can help increase yield.
Japanese Plums (Prunus salicina)
Taste: Juicy and sweet with a more delicate texture, often eaten fresh.
Examples: Santa Rosa, Satsuma, and Shiro.
Best suited for: USDA Zones 6–9.
Pollination: Typically self-sterile, meaning they require a second compatible tree for good pollination.
Choosing Varieties Based on Climate:
European Plums: Cold-hardy, ideal for areas with harsh winters.
Japanese Plums: Prefer warmer, milder climates and may need higher temperatures to thrive.
2. Tree Size Options
| Type | Mature Height | Best For |
|---|---|---|
| Standard | 15–25 ft | Large spaces, long-term production |
| Semi-Dwarf | 10–15 ft | Backyard gardens |
| Dwarf | 6–8 ft | Small spaces, containers |
Semi-dwarf plums are a popular choice for home gardeners due to their manageable size and ability to produce good fruit yields.
3. Planting Plum Trees
Best Time to Plant:
Early spring (before the tree breaks dormancy) is the ideal time to plant plum trees.
In mild climates (Zones 7–9), fall planting is also acceptable.
Site Selection:
Full sun: Plums need at least 6–8 hours of direct sunlight per day to thrive.
Well-draining soil: Plums do not like “wet feet.” Choose slightly acidic to neutral soil.
Spacing:
Standard trees: 15–20 ft apart
Semi-dwarf: 10–15 ft apart
Dwarf: 6–8 ft apart
How to Plant:
Dig a hole that is twice the size of the root ball.
Set the tree in the hole so that the graft union (the bulge near the base of the tree) is 2–3 inches above the soil.
Backfill with native soil, and water thoroughly.
Mulch around the tree to retain moisture and prevent weed growth, but keep mulch away from the trunk.
4. Watering & Fertilizing Plum Trees
| Stage | Watering | Fertilizing |
|---|---|---|
| Newly Planted | Water deeply 2–3 times per week, depending on rainfall | Do not fertilize immediately after planting |
| Year 1–2 | Water weekly, more often in dry spells | Use balanced fertilizer (10-10-10) in early spring |
| Mature Trees | Water deeply during dry periods, especially during fruiting | Annual spring fertilizing with balanced fertilizer |
✅ Watering Tip: Plums do not like sitting in water, so ensure good drainage in the soil. Be cautious with irrigation during winter to prevent root rot.
5. Pruning Plum Trees
When to Prune:
Late winter or early spring before the tree buds open is the best time to prune plum trees.
Avoid pruning during the growing season, as it can lead to sap loss and disease susceptibility.
Pruning Goals:
Maintain a vase shape or central leader to improve airflow and light penetration.
Remove:
Dead, diseased, or damaged wood.
Suckers and watersprouts.
Any branches that cross each other.
Pruning Tip: Do not over-prune; plums can be sensitive to heavy pruning, which can affect fruit production.
6. Pollination and Fruit Thinning
Pollination:
European plums are often self-pollinating but will produce better fruit with another plum tree nearby.
Japanese plums are mostly self-sterile and require a second plum tree (of a different variety) to pollinate and produce fruit.
Plum Tree Pollination Chart
| Plum Variety | Type | Self-Pollinating | Pollination Partners (Cross-Pollinators) |
|---|---|---|---|
| Santa Rosa | Japanese | Yes (partially) | Beauty, Shiro, Methley |
| Methley | Japanese | Yes | Santa Rosa, Shiro |
| Shiro | Japanese | No | Santa Rosa, Methley |
| Satsuma | Japanese | No | Santa Rosa, Beauty |
| Beauty | Japanese | Yes (partially) | Santa Rosa, Satsuma, Shiro |
| Ozark Premier | Japanese | No | Santa Rosa, Methley |
| Green Gage | European | Yes | N/A (but better with other European plums like Golden Transparent) |
| Stanley | European | Yes | N/A (better with other European types like Italian or Vision) |
| Italian Prune | European | Yes | Stanley, Vision, Green Gage |
| Mirabelle | European | No | Green Gage, Reine Claude, or other European types |
Notes:
Japanese and European plums are not compatible for pollination in most cases.
Bees and other pollinators are crucial for good fruit set even in self-pollinating varieties.
For best results, plant two or more compatible varieties within 50 feet of each other.
Thinning Fruit:
When to Thin: Once the fruit is the size of a marble (4–6 weeks after flowering).
How to Thin: Thin fruits so they are spaced 4–6 inches apart. This helps the tree put more energy into fewer fruits, increasing their size and quality.
7. Top Plum Varieties in the U.S.
1. Santa Rosa
Type: Japanese plum
Highlights: Perhaps the most iconic and popular plum in the U.S.—renowned for its sweet-tart flavor, juicy amber flesh, and versatile use in fresh eating, canning, or drying
Growing: Widely grown in California and beyond; self-fertile and often used as a pollinator for other varieties
2. Mariposa
Type: Japanese blood plum
Highlights: Large, heart-shaped fruit with sweet red flesh and a small, near-freestone pit. Known for exceptional eating and cooking quality
Market Value: Considered a premium fresh-market variety prized for high sensory appeal
3. Ozark Premier
Type: Hybrid (Methley × Burbank)
Highlights: Large, freestone plums with dark purple skin and juicy deep-red flesh; sweet, versatile, and highly productive
Growing Areas: Thrives in Central and Southern U.S., especially Midwest regions like Missouri and Arkansas
4. Satsuma
Type: Japanese plum
Highlights: Early-maturing sweet variety with firm, juicy dark-red flesh and mottled skin. Excellent for fresh eating and jam-making
5. Ever Popular European Varieties
Stanley: A staple among European plums—medium to large blue fruit with firm yellow flesh, self-pollinating, and good for fresh eating or drying
Italian Prune : Sweet, flavorful, excellent for drying and canning; widely planted in the Pacific Northwest.
6. Beauty Plum
Type: Japanese plum
Highlights: Sweet, flavorful, heart-shaped fruit with red-over-yellow skin and amber flesh. Ripens earlier than Santa Rosa and is self-fertile
Growing: Adaptable and productive in cooler, wetter climates where Santa Rosa may struggle
7. Emerald Beauty
Type: Japanese variety
Highlights: Light green skin; exceptionally crisp and sweet yellowish-orange flesh. Holds on the tree for over two months—a standout in flavor and shelf-life
Summary Table
| Variety | Type | Key Traits | Best For |
|---|---|---|---|
| Santa Rosa | Japanese | Sweet-tart, versatile, self-fertile | Fresh eating, processing |
| Mariposa | Japanese | Premium red-flesh, small pit | Fresh market, high-end use |
| Ozark Premier | Hybrid Japanese | Large, sweet, juicy, freestone | Home use, canning, fresh eating |
| Satsuma | Japanese | Early harvest, juicy, flavorful | Fresh eating, jam |
| Stanley | European | Firm, yellow flesh, self-fertile | Drying, fresh eating |
| Italian Prune | European | Sweet, flavorful | Drying, canning, fresh eating |
| Beauty | Japanese | Early season, self-fertile | Cooler climates, fresh use |
| Emerald Beaut | Japanese (Zaiger) | Supersweet, long-hanging fruit | Fresh eating |
Why These Varieties Stand Out
Consumer Favorites: Santa Rosa reigns supreme for its versatility and flavor. Mariposa achieves premium pricing in specialty markets, while Ozark Premier and Satsuma are popular in warmer and southern regions for their reliability and taste.
Home Orchard Picks: Stanley and Italian Prune shine in home orchards, especially where European plums are preferred for drying or baking. Beauty and Emerald Beauty are great choices for gardeners facing cooler climates or seeking long harvest windows.
Would you like recommendations tailored to your region, harvest timing, or use (e.g., best for eating fresh vs. drying)? Happy to help you narrow it down!
8. Pests & Disease Management
| Pest/Disease | Symptoms | Treatment |
|---|---|---|
| Brown Rot | Soft, rotting fruit with gray mold | Prune infected branches, use fungicides during bloom |
| Plum Curculio | Pitting on fruit, larvae inside | Use insecticides, remove fallen fruit, use traps |
| Aphids | Curling, deformed leaves | Neem oil or insecticidal soap |
| Powdery Mildew | White, powdery spots on leaves | Prune for airflow, use fungicides |
| Canker Diseases | Dark, sunken areas on bark | Prune and remove infected branches, apply copper fungicide |
💡 Dormant oil sprays in late winter can help control overwintering pests.
8. Harvesting Plums
| Type | Harvesting Tips | Ripeness Indicators |
|---|---|---|
| European Plums | Harvest when fruit is fully ripe and begins to soften slightly | Color change and slight give when gently squeezed |
| Japanese Plums | Harvest when the fruit is firm and juicy; don’t wait for over-ripeness | Color is rich, fruit detaches easily from the tree |
✅ Harvesting Tip: Plums do not continue to ripen well after being picked, so make sure they are ripe when you harvest them.
9. Storage Tips for Plums
Fresh plums: Store at room temperature until ripe, then refrigerate for up to 5 days.
Frozen plums: Pit and slice plums, then freeze them on a baking sheet before transferring to containers.
Canning: You can preserve plums by canning them in syrup or making plum jam, jelly, or preserves.
Bonus Tips for Success
Mulch: Apply mulch around the tree to conserve moisture, but keep it away from the trunk to prevent rot.
Bird Protection: Use netting or scare devices to protect your plums as they ripen. Birds love to peck at ripe fruit!
Frost Protection: Since plums flower early in the season, late frost can damage blossoms. Protect trees with row covers or by covering them with cloth during frost warnings.
My Take
My family has always had fruit trees from as far back as I can remember. My father used to joke every year that he should cut down his plum tree because it never had any plums. Every year the tree would be loaded with blooms and set a few tiny fruit but they would all eventually would fall from the tree or not develop, I suspect this was due to a pollination problem. Now fast forward 30 years, here I am now on my hobby farm. When I first ordered my initial order of fruit trees I really wasn’t that informed on how to really managed my hobby farm, but since then I have really gotten into the whole hobby farm world. I ordered two plum tree, a Methley and a Stanley. The problem here is that one is a Japanese plum and one is a European plum and since they are different types they will not pollinate each other and they bloom at different times. Supposedly both of these varieties are some what self fertile, but from my experience I would get maybe 1 or 2 plums set, but they would quickly fall from the tree. So what is the fix, well that fix is the Santa Rosa plum (at least for the Methley) . The Santa Rosa is an excellent plum and plus, from the chart above, you can see it is an excellent pollinator also. After having the Santa Rosa for one year, I went from having 1 or 2 plums to in excess of 50 plums (trees are still on the smaller size). In closing here is zone 7 I would highly recommend the Santa Rosa plum for everyone that is growing plum trees at home.