Some reasons to start early are a spring plant sale, a community garden, or even sending them home as gifts. You can even attach a half basket to a wall or fence.
Make sure to adjust the spacing to your own beds. A covered but sunny spot in your garden will be just perfect for planting. You can place them in a stocking either high or low depending on which size animal you are trying to get away.
You can check with local gardening businesses or the weather channel. By checking the seed packets you can determine how long the seeds must germinate before transplanting. The amount of time between when it has transplanted and when it will harvest. Butterflies need dampness in the garden to cool off from the sun. One can rely on rain to water your garden, but if you go through a hot dry spell it would be a good idea to water it once per week.
It is easy to forget that one thing such as a simple nectar plant can affect everything in your world. For the most successful garden one of the greatest needs it requires is water.