Volunteers who spent hours planting 30,000 bulbs in a Bristol park say they were left in "disbelief" after council workers mowed over them just days later. Friends of St George Park organised the planting of the bulbs on Saturday, with about 70 people of all ages involved. Ailie Tam from the friends group said the waste of time, money and effort was "really demoralising". Bristol City Council said it recognised the "upset and concern" caused by the incident, which was now being investigated. Tam said it had taken months of planning and liaising with the council's conservation and parks teams to make the planting event happen - part of a wider plan to help wildlife thrive in the park. The group had also raised money to pay for the bulbs by selling 12,000 bags of duck food. Tam said when she found out the bulbs had been destroyed, she could not sleep. "I got up and took my kids the next morning and they were so upset. It's just the disbelief of it," she said.…