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Superior Plum Tree Prunus americana x Prunus salicina 'Superior'

  • Superior Plums are a cross of Japanese and American plums.

    Superior Plums are a cross of Japanese and American plums.

  • This hardy clingstone plum ripens in late summer.

    This hardy clingstone plum ripens in late summer.

  • Plums flower in spring, filling the tree with white blossoms.

    Plums flower in spring, filling the tree with white blossoms.

* Images shown are of mature plants

Superior Plum Tree Prunus americana x Prunus salicina 'Superior'

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Product Description

Enjoy a Robust Harvest of Red Plums!

A Superior Plum has a taste you won’t be able to forget. A mix between American and Japanese plum varieties, this red-skinned variety has a firm texture and dessert-sweet flavor that sets it apart from other varieties. 

What’s more, the Superior Plum Tree is a reliable producer of vigorous harvests. In the summer months, hardly a day will go by when you can’t pick a plum - or a few!

The Superior Plum looks great on the tree - and on your plate. The perfectly-round ruby fruit opens onto apricot-colored flesh, perfect for biting into straight from the tree. Enjoy baking, preserving, and making jams or jellies out of the many plums this tree produces. 

Even better? The Superior Plum has - you guessed it - superior cold tolerance down to -20F. Whether your climate has chilly or mild winters, you too can enjoy its light green, red-veined foliage and white spring-blooming flowers. And the Superior Plum typically starts producing fruits in its first year after planting. 

This tree’s “Superior” name is well-deserved - see why by ordering yours today!

Planting & Care

1. Planting: All plum trees need a full sun exposure so be sure to pick a bright spot for the tree’s new home. Well draining, sandy soil is highly recommended with a pH range from 5.5 to 6.5 (which can be easily determined with an inexpensive soil testing kit from your local nursery/big box store). If possible, plant the tree in a south or west location to cut back on the wind which in turn will assist the tree in setting fruit.

Prepare your hole by digging it three times as wide as the root ball and just as deeply. Gently comb the root ball, freeing up any compacted roots and position the tree. Back fill the hole partially, pressing down gently as you go along and water to settle the soil. Once the hole has been completely filled, add a layer of organic mulch around the tree to help conserve water. Do not let the mulch touch the trunk of the tree as this can cause rot and fungus.

2. Watering: Water your tree generously every week; twice a week for the first growing season to help promote the growth. Deep waterings encourage the roots to extend more deeply into the soil which in turn makes the tree more drought resistant. For young trees, a deep watering with a little over two gallons of water works well, whereas adult trees will require around eight gallons for each watering. If the edges of the tree’s leaves turn brown or wilt, then the tree is not receiving enough water. The bark at the base of the trunk will change from a light brown to dark brown (or black-ish) color if it’s receiving too much water.

3. Pruning: Give your tree a full year to get situated in its new home before attempting to prune. Young plum trees are typically pruned in the late winter to early spring seasons before buds begin to break. This will cut back on the possibility of silver leaf disease attacking the tree. More established plum trees will benefit from a midsummer pruning. 

Pruning isn’t very difficult but a necessity to “cut back” on broken limbs from heavy fruit production. Take off about 20 percent of the previous year’s growth with cuts at a 45 degree angle. Use a sterilized cutting tool, leaving the upright, vigorous branches plenty of space for light to penetrate. Rubbing alcohol works to sterilize any tool(s) needed for pruning.

4. Fertilizing: There are a couple of steps for proper fertilizing of your plum tree to ensure a healthy growing season. Young trees that are three years or younger will benefit from about a half cup of a balanced 10-10-10 fertilizer formula applied once around mid-April and again in early June. More established plum trees will require one annual application of the same balanced formula mid-April. Use eight ounces for every year of the tree’s age. Fertilizer can burn the roots of younger trees, so instead of taking the chance with chemicals, improve your soil’s fertility by amending compost into it.

Plum trees that are fertilized properly should grow about one foot to 18 inches per year. Symptoms of over fertilizing can include leaf scorching and excessive growth. If you’re noticing these issues then reduce the amount of fertilizer for the following year. Always be sure to water deeply after every fertilizer application and avoid fertilizer getting too close to the trunk.

5. Pollinating: Some varieties of plums will require a cross pollinator to produce fruit. Be sure to keep your trees within 20-25 feet of one another for the best pollination which will result in the best fruit yield.

6. Harvesting: The best tasting plums are left on the tree to fully ripen before picking. Apply gentle pressure with your fingers to determine ripeness. Soft skin on the fruit means it’s ready to be picked. They should easily come off of the tree when ripened using a slight twist. Plums are best stored in the fridge as they do not stay fresh at room temperature for long. If kept in the fridge they may last a bit longer, closer to two to four weeks.

Product Details

Growing Zones: 4-8 outdoors


    
    
    
      4-8 outdoors
    
   Map 4-8 outdoors (hardy down to -20℉)
  • Mature Height: 18-20 ft.
  • Mature Width: 18-20 ft.
  • Sunlight: Full to Partial Sun
  • Blooms: Spring
  • Growth Rate: Moderate
  • Does Not Ship To: AZ, AR, CA, ID, LA, WA

Pollination Info

Superior Plum Tree Pollination

Superior Plum Trees are not self-fertile. You will need to plant another variety to achieve fruiting. Below are the most effective pollinators we have chosen for your area...

Shipping Details

Shipping Alert:

You can still order, but due to cold weather, we have delayed shipping to the areas shaded on the map below. We want your new plant to thrive right out of the box, so we will wait on shipping your order until the weather is ideal. This includes anyone in Growing Zones 3, 4, 5, & 6. If you are unsure of your growing zone, visit our Growing Zone Finder.

Some plants are not available for immediate shipment, and delayed delivery is noted.

We will resume normal shipping in the Spring. Please see the table below for your approximate ship date.

Zone Map
Growing Zone Shipping Resumes
Zones 3 & 4 Week of May 2nd
Zone 5 Week of April 11th
Zone 6 Week of March 28th
Zones 6 - 11 Ships Now!


Estimated Shipping Time: Most orders ship within 1-2 days. As noted on the website, some items are seasonal, and may only ship in spring or fall. Once your order is shipped, you'll receive an email with a tracking number.

Order Total Shipping Charges
Less than $15 $11.99
$15.00-$23.99 $13.99
$24.00-$39.99 $16.99
$40.00-$79.99 $19.99
$80.00-$98.99 $24.99
$99.00-$128.99 $29.99
$129 + FREE SHIPPING!

Product Details

Growing Zones: 4-8 outdoors


    
    
    
      4-8 outdoors
    
   Map 4-8 outdoors (hardy down to -20℉)
  • Mature Height: 18-20 ft.
  • Mature Width: 18-20 ft.
  • Sunlight: Full to Partial Sun
  • Blooms: Spring
  • Growth Rate: Moderate
  • Does Not Ship To: AZ, AR, CA, ID, LA, WA

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