Today, as I showed a friend round my garden, we stopped by the self-sown pumpkin plants that have scrambled freely over a sunny spot. It was a visual delight as bumblebees, two to three at a time, crawled deep into the throats of the pollen-rich golden yellow flowers. Bumblebees flitted from flower to flower in their continual quest for nectar. Each precious insect played its essential ecological role for our benefit. Such hard-workers. I like these furry foragers, working in my garden. They are very welcome.
In January 2007. I got lost in thought about the value of the beneficial insects. Years ago, Himself and I cleared a rambling Buddleia (B.davidii), an invasive pest plant, from our roadside boundary. Unfortunately, we disturbed a large colony of bumblebees nesting in the ground among the sprawling tangled root system. Beautiful bumblebees by the hundreds flew into the air as the tractor pulled the enormous trunk from the ground.
The prolific Buddleia flowers were obviously a great food source of pollen proteins and sugary nectar. The bumblebees were kind to us that day when in our ignorance we wrecked their nest. Quite a different story though when we’ve encountered and dealt to aggressive wasps in their nests.
I appreciate how various beneficial insects pollinate edible plants. Like the pumpkin blooms, the courgette, the cucumber and the watermelon flowers also seem to be attracting the bumblebees.
“Bumblebees rely almost entirely on flowering plants for food and their very existence is dependent on gaining adequate supplies of nectar and pollen, or `bee bread.’ Bumblebees work very long hours, foraging from dawn to dusk in search of nectar and pollen even on cold, rainy or foggy days which prevent other insects from flying.”
I read that to encourage bumblebees to live and work in my garden a permanent nesting box is part of the answer as does growing a diversity of flowering food-source plants across the seasons.