Plant seed balls

How is the evidence assessed?

Source countries

Key messages

  • A randomized, replicated, controlled study in the USA found that planting seed balls resulted in lower seedling numbers than sowing seed.

About key messages

Key messages provide a descriptive index to studies we have found that test this intervention.

Studies are not directly comparable or of equal value. When making decisions based on this evidence, you should consider factors such as study size, study design, reported metrics and relevance of the study to your situation, rather than simply counting the number of studies that support a particular interpretation.

Supporting evidence from individual studies

  1. A randomized, replicated, controlled study in three blackbrush shrubland sites in California, USA (Jones et al. 2014) found that planting seed balls containing shrubland species resulted in lower seedling numbers than sowing seeds. Seedling emergence was lower in areas where seed balls containing shrubland species were planted (0–5% of seeds) than in areas where seeds were sown (17–22% of seed). Plots measuring 70 cm x 70 cm were established and in January 2010 seed balls planted in some plots and seeds sown in the other plots (number of plots unclear). Seedling emergence was assessed in between March 2010 and May 2012.

    Study and other actions tested
Please cite as:

Martin P.A., Rocha R., Smith R.K. & Sutherland W.J. (2018) Shrubland and Heathland Conservation. Pages 447-494 in: W.J. Sutherland, L.V. Dicks, N. Ockendon, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2018. Open Book Publishers, Cambridge, UK.

Where has this evidence come from?

List of journals searched by synopsis

All the journals searched for all synopses

Shrubland and Heathland Conservation

This Action forms part of the Action Synopsis:

Shrubland and Heathland Conservation
Shrubland and Heathland Conservation

Shrubland and Heathland Conservation - Published 2017

Shrubland and Heathland synopsis

What Works in Conservation

What Works in Conservation

What Works in Conservation assesses the research looking at whether interventions are beneficial or not. It is based on summarised evidence in synopses, on topics such as amphibians, bats, biodiversity in European farmland, and control of freshwater invasive species. More are available and in progress.

More about What Works in Conservation

Download free PDF or purchase
Our Journal: Conservation Evidence

Our Journal:
Conservation Evidence

A unique, free to publish open-access journal publishing research and case studies that measure the effects of conservation actions.

Read latest volume: Volume 16

Special issues: Amphibian special issue

Go to the Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

Who uses Conservation Evidence?

Meet the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust