How can we give forest seedlings
a better start – together?
Interest in new ways to improve forest establishment is growing. SILVIVO® is one such solution, and it has already attracted considerable interest among forest owners across Sweden. We spoke with Jonas Gullberg, Head of Business Development and Sales at SILVIVO®, about the response so far, the challenges facing modern forestry, and what comes next.

How has SILVIVO® been received so far?
“We’ve been very encouraged by the response. Our field trials for 2026 are already fully booked, and sales have exceeded expectations. Interest has come from across the country—from private forest owners to organisations such as Skogssällskapet, a Swedish forest management organisation, and the Church of Sweden. I’ve had the opportunity to meet many of them, as well as several nurseries, and I’d like to thank everyone for the constructive and insightful discussions. There is a great deal of expertise in the sector, and people are very willing to share it.
At the same time, independent trials are being initiated at the Swedish University of Agricultural Sciences (SLU) and Linnaeus University, and we are seeing growing international interest. Our CEO, Jonathan Love, has recently been in Australia conducting trials on eucalyptus, and we are also seeing interest from Finland and the UK.”
What problem are you trying to solve?
“It comes down to establishment. According to Skogforsk, the Forestry Research Institute of Sweden, around 20 per cent of seedlings are lost in the first few years after planting. Follow-ups by the Swedish Forest Agency point to similar challenges. Given the level of expertise in Swedish forestry, that is not a figure we should accept.
Successful establishment depends on several interlinked factors: plant quality, handling and transport from nursery to site, site preparation, planting position and the quality of execution. If one part underperforms, the effects are quickly felt downstream. At the same time, the variation between stands suggests clear scope for improvement.
Most losses occur early on, and conditions during the first few years have a lasting impact on stand development. Poor establishment leads not only to lower stocking levels, but also to higher costs for replanting, pre-commercial thinning and lost production.
In simple terms, seedlings need to establish faster—so they can better withstand drought, pests and browsing, and compete more effectively with surrounding vegetation. Pine weevil damage remains a major challenge, but there is also scope to take a more preventative approach—something we want to better understand and help advance.
At present, much of the risk during establishment falls on the forest owner, even though many factors across the chain play a role. If around 20 per cent of seedlings fail to establish, it raises an important question: what can we, as an industry, do better?”
How does SILVIVO® work—and what are the benefits?
“SILVIVO® is a plastic-free nutrient granule applied directly in the root zone at planting. Nutrients derived from yeast extract are encapsulated in clay and released gradually, regulated by soil moisture and temperature. This ensures the seedling receives nutrients exactly where and when they are needed, without the risk of salt stress.
Placing the amino acid-rich granules beneath the seedling ensures that nutrients are delivered directly to the root zone, rather than being taken up by surrounding vegetation. This supports stronger root development, reduces planting stress and improves the plant’s ability to take up water and nutrients, while increasing resilience under stress.
It also helps seedlings move more quickly through their most vulnerable stage—for example, the period when they are most susceptible to pine weevil damage, typically when the stem diameter is below 10 millimetres.
The main advantage is that it sets the seedling up for a strong start. Faster establishment reduces the need for corrective measures and lowers the risk of losses. While it represents a slightly higher upfront cost at planting, we believe it leads to savings in both time and money over the longer term.
More broadly, this reflects a shift in approach—from reacting to problems later to building in quality from the start. With many parties involved, responsibility can easily become fragmented, which makes getting the early stages right all the more important.”
What happens next?
“We will continue to learn and deepen our understanding of these challenges in practice. If we can help save both time and money while contributing to stronger forests for the next generation, then we’ve achieved something that genuinely matters.
From a practical perspective, we are also developing solutions for the planting process itself. For the method to be effective, nutrients need to be placed correctly—directly beneath the roots—which means the planting systems we recommend must work reliably in real conditions.
Ahead of 2026, we have developed hand applicators for use in our trials. At the same time, we are working together with A Teknik—and in close dialogue with forest owners and contractors—to develop a robust planting tube with integrated, controlled dosing. The aim is to launch it in early 2027. A prototype has already been developed and will be showcased at Skogsnolia. The goal is to combine precision in application with a method that works at scale.”
Speaking of Skogsnolia—what are you most looking forward to?
“Above all, meeting knowledgeable and engaged forest owners. We will have a limited number of SILVIVO® bottles available for sale, but the first batch is almost sold out. So our main focus will be on conversations—listening, learning and exchanging experiences.
We’re also looking forward to gathering feedback on the planting tube prototype. That will be particularly valuable.
Do come and visit us at stand 2062—we’ll have coffee ready.”
