Some good friends came to dinner and brought me tulips last week. They were tightly closed green buds, but now they are opening and showing their true colours.
Update Thursday 2 February: piercing each stem with a pin seems to be working! Each flower that started to droop got an extra poke, and actually perked up, and they still look good after 6 days. I also have a copper penny in the water, and I read on the internet that putting vodka in the water helps, but this time I'm keeping the vodka for me!