Rugby union has never been synonymous with luscious green grass and impeccable playing surfaces. But the venue for this year’s Rugby World Cup final did not have even a blade of grass on it when it was stripped bare and re-laid just a month out from hosting its first match of the tournament.

The pitch at Nissan Stadium, to be known as International Stadium Yokohama for the duration of the tournament, was in a sorry state when it hosted its final match in Japan’s top-tier football competition – the J1 League – prior to a six-week spell as a rugby venue.

An abnormally long rainy season in Japan’s Kanto region, 30 days longer than that experienced in 2018, has meant little sunlight for the Yokohama grass and resulted in a harsh environment for the natural sprouts within the hybrid turf to grow.

The uncharacteristically overcast July, coupled with poor ventilation inside the 80,000-seater stadium, led to concerns over whether the pitch would be ready for that start of the tournament and a decision was taken by Yokohama City and tournament organisers to re-lay the turf just last week.

They remain, however, comfortable with the timeframe for the new turf to bed in. “With Yokohama we have planned and prepared for the transition from football to rugby and are confident that the playing surface will be in peak condition,” tournament organisers said. “An integral part of our planning has been the monitoring and analysis of the transition between summer and winter grass types to ensure that the transition in 2019 is managed as optimally as possible.”

Yokohama is one of five host venues with hybrid turf, along with Kobe, Kamaishi and the venues for two quarter-finals, Oita and Tokyo. Hybrid turf combines natural grass with a small quantity of artificial grass, usually around 3% – in line with major sports competitions regulations – for a stronger and more durable pitch than that consisting of 100% natural turf.

Weather has not been kind to Japan as it gears up to host Asia’s first Rugby World Cup. Meteorological records tumbled in Tokyo this summer as the capital experienced 20 consecutive days of three hours or less of sunlight, the such longest sequence since records began in 1961.

Meanwhile, torrential rain last week caused landslides and floods, triggering evacuation orders of 850,000 people in Japan’s southern island of Kyushu, home to the three tournament venues of Fukuoka, Kumamoto and Oita.

“With more than 2,000 kilometres separating Sapporo in the north and Kumamoto in the south, the seasonal variation across Japan brings added complexity,” organisers added. “We are prepared and ready to provide a natural, sustainable playing surface and are confident that the turf at all venues will be in peak condition for the tournament.

“All stadia and pitches will be in a condition befitting Rugby World Cup. The organising committee and World Rugby have been working closely with leading global turf experts since 2015 to ensure optimal conditions.”

Yokohama was only confirmed as a host venue in 2015, having originally been overlooked as one of the 12 stadiums.

The 2002 Fifa World Cup final venue became one of two stand-in replacements after it became clear that the New National Stadium, built specifically for the Rugby World Cup and the Tokyo 2020 Olympics, would not be ready in time for the former.

Budget constraints and squabbles over the design mean the stadium will not host its first sporting event until March 2020, nor be the centrepiece World Rugby had hoped for.

Instead, Ajinomoto Stadium, a multi-purpose venue in the east Tokyo suburb of Chofu, will take on the role of hosting the opening match of the tournament on 20 September, in addition to seven other games throughout the tournament.

Yokohama Stadium, will assume responsibility for hosting both semi-finals and the final as well as several key pool stage fixtures including the All Blacks’ title defence opener against South Africa, Ireland v Scotland and England v France.