How to attract butterflies?

There are several ways to attract butterflies:

1, fragrance, if the fragrance is close to that of flowers, the effect will be better.

2, flowers, flowers are the best way to attract butterflies, but there are certain requirements for the number of flowers.

3, temperature, when the weather is cold, warm places can attract butterflies.

note:

Butterflies have high requirements on the environment, so they should keep the temperature stable.