Nectar provides butterflies with energy, but a pool of mud gives them the vital nutrients they need for flight, bodily functions and reproduction. So if you like to garden with wildlife in mind and already have a buffet of nectar-rich flowers, this 10-minute project should be next on your summer to-do list. Because after the development flowers for pollinators, a mud station is the way to go help butterflies thrive in your garden.
Mud-puddle is a basic butterfly behavior and in the wild, hundreds of butterflies can gather in a mud-puddle. Insects forage for liquid organic matter and then absorb liquid through their straw-like proboscis to extract vital salts and amino acids that nectar does not provide but are essential for survival.
Different species of butterflies tend to focus on different sources for this liquid diet, and some have evolved to gobble up rotting plants, corpses, and even the salty tears of reptiles. But don’t worry: the vast majority of butterflies make puddles in wet soil, hence the term “mud-puddle”, so it’s easy to create a puddle pool in your garden.
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Providing a suitable mud puddle is a particularly important way to help butterflies in June and July, when moths are prime for mating. Males moult much more often than females, and this is because they require sodium and amino acids to produce sperm, and these nutrients are passed on to females during mating, giving the eggs a better chance of survival. To extract adequate nutrients, a male slimes at an astonishing rate, flushing approximately 600 times its body mass of fluid through its digestive system in a typical day.
Butterflies also mud to hydrate, which becomes more necessary as summer temperatures rise. Unable to land in open water, butterflies rely on moist areas such as stream banks and pothole edges to drink safely. Offer this valuable source of moisture to your pollinator garden, and butterflies are likely to visit more often and stay longer.
So creating a butterfly mud pool is a wonderful addition to a wildlife garden, especially this time of year.
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How to make a mud pool for butterflies
The best way to create the right conditions that butterflies desire is to make a pool of puddles in a shallow 12-16 inch container. A potted saucer is perfect, and plastic or metal is better than porous terracotta (which is fine to use – it’ll just dry out faster, so you’ll need to refill more often).
Add a half-and-half mixture of coarse sand and garden soil and mix in the tiniest pinch of unrefined sea salt or pure, unscented Epsom salt (magnesium sulfate). Do not use iodized table salt, as the added iodine and anti-caking agents can be highly toxic to insects. If you have it, a tablespoon of compost is a good addition for extra minerals.
Place some flat pebbles on top to give your guests a safe place to rest their wings. Dark stones are best if possible as these will absorb the warmth of the sun. Cold-blooded butterflies rely on the environment to warm their bodies to the point where they can fly, so you’ll often see these insects basking with their wings open.
Place the mud station in a sunny, sheltered spot and pour in enough water to thoroughly wet the mixture and make some very shallow, small puddles. This is a wading pool, not a paddling pool, so most of its surface should be wet soil or sand, not open water. Keep the station topped up with water as needed and, once a month, empty and refill to replenish nutrients as well as maintain hygiene.
While it is better for the mud station to be quite close flowers rich in nectar so that butterflies can find it easily, place your pool away from dense plant cover, where predators like cats – and large spiders, who love to snack on butterflies – could hide.
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Apart from being a beautiful part of our gardens, butterflies they play a vital role in the ecosystem as pollinators and as early indicators of environmental change. So let’s help these beautiful creatures as much as we can. Even if your garden is tiny, you can support butterflies growing nectar-rich flowers in containers. In addition to building a lap pool, giving wildlife a home with a stylish bed bug houseincreasing host plants for butterfly eggsand taking out it was the best fruit for butterflies to feed on all will allow these winged wonders to truly thrive.
