Kenya: Flower growers aim to cut pollution

Kenya is one of the biggest exporters of cut flowers in the world but the booming industry has created a raft of environmental problems. Local producers are now coming up with new ideas to cut pollution while keeping their business profitable.

Europeans often turn to a bouquet of flowers when Valentine’s Day and anniversaries roll around but many may be unaware that those beautiful blossoms were probably grown half a world away in Kenya.

The East African country enjoys a 38% share of the European Union’s market and is a billion-dollar-industry. It is estimated that nearly two million Kenyans out of a total population of roughly fifty million rely indirectly on the flower industry.

But the horticultural trade has come at a price. Ever since the industry first took off in the 1980s, many of Kenya’s rivers and main bodies of water have been affected by pollution caused by the farms that were set up to tap into the demand for flowers.

A lack of regulation and awareness about the impact of fertilisers, pesticides and sediment on the environment characterised the early years of the industry, which initially grew the flowers in open fields and did nothing to treat the water discharged by farms.

Organic pollution can significantly alter the balance of bodies of water, leading to large algae blooms and changes in PH level. The biodiversity of many of Kenya’s lakes has already paid the price as wildlife experts claim that species numbers have declined in recent decades.

United Nations freshwater expert Joakin Harlin warned that it can take up to forty years for lakes and other waterways to rebalance themselves and that is only if there is zero human impact in those four decades.

Irresponsible practices have slowly changed lately and farming enterprises have now started to switch to closed loops and greenhouse cultivation, with the aim of cutting pollution and protecting profit margins.


One of those enterprises is Longonot farm on the banks of Lake Naivasha, about two hours northwest of the capital, Nairobi. It produces mostly roses, which are shipped primarily to British supermarkets, the Netherlands and the rest of the EU.

In order to lessen the farm’s environmental impact and even boost profits, the company’s operators decided to utilise techniques found in nature to filter and reuse the water needed to grow upwards of a million roses for export every day.

By putting in place a system that uses natural bacteria, herbicide-loving plants and both artificial and natural wetlands, the farm now has a zero-discharge policy, where no water is pumped back into Lake Naivasha. The estimated 3,000 hippos that call the lake home must be thankful.

Longonot’s sustainability manager, Ed Morrison, acknowledged that “no one had a clue about sustainability when the industry first started. That’s changing now.”

He added that the farm’s system also has a number of other benefits beyond its environmental credentials. The wetlands need regular harvesting in order to keep them at optimal filtration capacity and the plants can be made into compost when they are removed. The farm also doesn’t have to pay the water discharge fee thanks to its closed loop.

Morrison pointed out that there is no legal obligation for the farm to carry out these measures but insisted they make financial sense. He also said that he hopes more of the many farms around the lake will follow Longonot’s lead and stop polluting Naivasha.

Click here to read the full article at EURACTIV.

12/06/2017 - EURACTIV

$26M to expand a rose greenhouse complex
The third stage of a greenhouse complex for rose cultivation, “Podosinki”, in the Moscow region city of Dmitrov (Russia) is planned for construction over the course of three years, said the company’s General Director Yulia Charyshkina to Interfax. A...

Vacancy of the day

Plant Specialist Horticulture LED Pharmaceutical Crops, NL