What we find is that the monarchs strongly prefer the medicinal milkweed.

们发现帝王斑蝶偏好药性乳草。

The problem is there are different types of milkweed.

问题是乳草有很多种类。

Young butterflies in the form of caterpillars depend on milkweed.

毛毛虫形状小蝴蝶以筋为食。

Decker say these findings are not just about butterflies and milkweed.

德克尔表示，这些发现不仅仅与蝴蝶和筋有关。

" There are things people can do to help, " she said, including planting milkweed.

“人们可以一些事情来帮助它们，”她说，包括种植筋。

Drier weather in the U.S. West, driven by climate change, means less milkweed for butterflies to eat, Wagner said.

瓦格纳说，受气候变化影响，美国西部气候更加干燥，这意味着可供蝴蝶食用乳草减少。

It is important to choose the right kind of milkweed.

选择正确筋种类是很重要。

She said not all milkweed is the same.

她说，并不是所有筋都是一样。

At her Virginia home, Katherine Dietz already grows three types of native milkweed, food for hungry monarch caterpillars.

凯瑟琳·迪茨在弗吉尼亚州家中已经种植了三种本地乳草，它们是饥饿帝王毛虫食物。

At her Virginia home, Kathryn Dietz already grows three types of native milkweed, food for hungry monarch caterpillars.

在她弗吉尼亚州家中，凯瑟琳·迪茨已经种植了三种当地乳草，这是黑脉金斑蝶幼虫饥饿时会吃食物。

To help increase the habitat for monarchs and other species, scientists recommend planting native milkweed alongside other nectar producing flowering plants.

为了帮助增加黑脉金斑蝶和其他物种栖息地，科学家建议与其他产蜜开花植物一起种植当地筋。

One of the quickest and best ways to help is to plant milkweed on your property.

最快以及最好帮助方式之一是在你土地上种植筋。

The big one is the milkweed.

最大是乳草。

Monarchs lay their eggs on milkweed plants.

帝王蝶在乳草植物上产卵。

In other words, what these females are doing is they're laying 68 percent of their eggs in the medicinal milkweed.

换句话说雌蝶把 68％ 卵产在药性乳草上。

And the female Monarch will lay its eggs only on milkweed.

而雌性帝王蝶只会在乳草上产卵。

With the use of pesticides the amount of milkweed has really declined.

随着杀虫剂使用，筋数量确实减少了。

To find the right kind of milkweed, you can use the National Wildlife Federation's Native Plant finder.

要找到适筋，你可以使用国家野生动物联会本地植物查找器。

She persuaded the school to add milkweed to the garden to attract butterflies.

她说服学校在花园里种植筋以吸引蝴蝶。

Planting tropical milkweed in the United States is a problem because it is not native to the country.

在美国种植热带乳草是一个问题，因为它不是这个国家原产植物。