A look at how our nursery is becoming a seed and tree centre
Significant strides have been made at our new state-of-the-art nursery as the site moves towards being fully operational.
Since the handover of the site in February, nearly 12 million seedlings have germinated and are now growing in the 12,000 m² glasshouse.
Bryony Hewetson Ward, Head of Plant and Seed Supply, said:
“It’s exciting to see the progress being made at our new nursery site since the construction completion and handover of the glasshouse.”
Eight million of the seeds were planted this spring using the Tape4trees system that involves mechanically planting seeds in special cells joined in a continuous ribbon of tape. This technique then enables up to one million trees to be planted in the outdoor fields in a single day.
Additionally, our staff have been sowing four million cell grown stock into mini plugs. Seeds that germinate will then be transplanted by an automated robotic system into larger trays. This process ensures seedlings develop into more viable and hardy trees while also improving efficiency of space in the glasshouse by reducing the quantity of ungerminated seeds sitting in the trays.
“Growing trees from seed inside the glasshouse instead of outdoors in fields is allowing us to have much better control over the growing environment making seedlings less vulnerable to damage from extreme weather events, herbivore browsing and competition from weeds,” adds Bryony.
The seedlings in the larger cells will stay in the glasshouse until big enough to be placed outdoors to harden off - the process of gradually acclimating them to outdoor conditions - before then going out to the planting teams across Scotland.
“We are also starting to see the positive impact of making energy and resource efficiency core to the redevelopment. The borehole water supply and ponds used to irrigate our young trees are proving valuable during the recent dry spell,” said Bryony.
The modern borehole fed irrigation system is watering the seedlings inside the glasshouse while outside, ponds that collect rainwater and runoff from roofs and gutters are providing the water for the outdoor trees. The boreholes mean there will be no new demand on the mains water system.
Energy and resource efficiency has been core to the redevelopment: local Scottish timber has been used in construction of the office building, low energy use technologies have been incorporated into the building design, while solar panels are supplementing electricity use.
Now that the redevelopment is complete, Newton could have up to 25 million trees, including both conifer and broadleaved species, growing on site in any one year, a significant increase from the seven million trees we were producing before – representing significant operational savings.
Planting and growing more young trees in Scotland will underpin our contribution to the Scottish Government’s ambitious target of net zero emissions by 2045. It will reduce the carbon footprint created from transport emissions and increase the number of trees we plant to absorb carbon dioxide, produce oxygen and end up as sustainable wood products.