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Mammoth Pineapple Guava

Acca sellowiana 'Mammoth'

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Mammoth Pineapple Guava (Acca sellowiana 'Mammoth') at Roger's Gardens

Mammoth Pineapple Guava flowers

Mammoth Pineapple Guava flowers

(Photo courtesy of NetPS Plant Finder)

Mammoth Pineapple Guava (Acca sellowiana 'Mammoth') at Roger's Gardens

Mammoth Pineapple Guava fruit

Mammoth Pineapple Guava fruit

(Photo courtesy of NetPS Plant Finder)

Height:  15 feet

Spread:  15 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  8a

Other Names:  Feijoa, Guavasteen


A large evergreen shrub that can be maintained as a small tree, featuring gray-green leaves with white, woolly undersides; produces showy red and white flowers in spring, and edible, red flushed, green fruit in fall; great for screening; drought tolerant

Edible Qualities

Mammoth Pineapple Guava is a large shrub that is typically grown for its edible qualities, although it does have ornamental merits as well. It produces bluish-green oval fruit (technically 'drupes') with a red blush and creamy white flesh which are typically harvested when mature. The fruits have a sweet taste with a gritty texture and a pleasant fragrance.

The fruit are most often used in the following ways:

  • Fresh Eating
  • Cooking
  • Preserves

Features & Attributes

Mammoth Pineapple Guava features showy white pincushion flowers with dark red overtones and red anthers at the ends of the branches from late spring to early summer. It has grayish green foliage with white undersides. The fuzzy oval pinnately compound leaves remain grayish green throughout the winter. The fruits are showy bluish-green drupes with a red blush, which are carried in abundance from early summer to mid fall.

This is a multi-stemmed evergreen shrub with an upright spreading habit of growth. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition. This plant will require occasional maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. It is a good choice for attracting birds and bees to your yard. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Messy
  • Spiny

Aside from its primary use as an edible, Mammoth Pineapple Guava is sutiable for the following landscape applications;

  • Accent
  • Hedges/Screening
  • General Garden Use
  • Windbreaks and Shelterbelts
  • Orchard/Edible Landscaping
  • Container Planting

Planting & Growing

Mammoth Pineapple Guava will grow to be about 15 feet tall at maturity, with a spread of 15 feet. It has a low canopy with a typical clearance of 1 foot from the ground, and is suitable for planting under power lines. It grows at a medium rate, and under ideal conditions can be expected to live for 40 years or more. While it is considered to be somewhat self-pollinating, it tends to set heavier quantities of fruit with a different variety of the same species growing nearby.

This shrub can be integrated into a landscape or flower garden by creative gardeners, but is usually grown in a designated edibles garden. It does best in full sun to partial shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil pH, but grows best in sandy soils. It is somewhat tolerant of urban pollution. This is a selected variety of a species not originally from North America. It can be propagated by cuttings; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Mammoth Pineapple Guava is a good choice for the edible garden, but it is also well-suited for use in outdoor pots and containers. Its large size and upright habit of growth lend it for use as a solitary accent, or in a composition surrounded by smaller plants around the base and those that spill over the edges. It is even sizeable enough that it can be grown alone in a suitable container. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

Hardiness Zone Plant Height Minimum Sunlight
Accent  Screening  Garden  Windbreak  Orchard  Container 
Flowers  Fruit  Attracts Wildlife 
Ornamental Features