Psidium guajava

Yellow guava

Family: Myrtaceae

Origin: Brazil

Yellow Guava tree with immature fruit.
A common home orchard fruit tree that can grow up to 4m tall. Yellow guava bears small yellow sweet fruit in summer that are often eaten or made into jams and jellies.

Regional Pest Management Plan (RPMP) status

  • Whole region — Sustained control
  • Hauraki Gulf Controlled Area Notice pest

View more about the RPMP statuses

General description

Shrub or small tree < 3 m tall. Leaves are < 14 x 7 cm, strongly veined and densely hairy when young. Flowers are white/yellow and borne July – March. Fruit is yellow, < 4 cm in diameter, contains hard seeds and ripens in November – March.

What you need to know

To help protect our environment, from 1 September 2022, you:

  • will not be allowed to breed, distribute, release or sell yellow guava within the Auckland region.
  • will not be allowed to plant yellow guava within the Auckland region, unless you are transferring an existing plant on your land to another location within the boundaries of the same property.
  • must destroy any yellow guava on land that you occupy if it has been planted in breach of the above rules and you are directed to do so by an authorised person.

Habitats

Forest margins, scrub, disturbed forest, pasture, dry habitats.

Dispersal

Seeds dispersed by birds and pigs. Vegetative spread from suckering.

Impact on environment

May exacerbate impacts from animal pests such as possums and feral pigs by providing an important food source.

Control

Site Management

Follow up treated areas 3 times per year. Encourage natural regeneration of native plants or replant treated areas where possible after 2-3 treatments to establish dense ground cover and minimise reinvasion.

Recommended approaches

Physical control

Method: Dig out.

Plant parts requiring disposal: Seeds.

Disposal options: Remove to greenwaste or landfill if practical.

Biocontrol

Biocontrol is currently not available for this species.

Community agrichemical control recommendations

No qualifications: Cut stump and paste freshly cut base of stems with metsulfuron gel. Large stems can be frilled and pasted with metsulfuron gel.

Basic Growsafe certified: Cut stump and spray freshly cut base with 5g metsulfuron-methyl per 1 L of water. Remove cut stems to greenwaste or landfill or stack in a pile and spray.

Certified Handler/Experienced agrichemical user: Foliar spray with 5g metsulfuron-methyl per 10L of water and 20ml penetrant.

Caution: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.