I have seen some lists going around for planting that are incorrect or may contain dates which don’t apply to all parts of the world. Although it is difficult to make a list that applies to every climate I felt that this list would be helpful to most people in most places. To make the most of this information find your last average frost date
This list is referring to when to plant in the ground or in a pot or raised bed outdoors. Some things such as tomatoes, peppers, and eggplant are best planted as a plant and others such as peas, beans, and corn are best planted as a seed directly into the ground. If planting indoors you may plant whenever you want.
Remember to add good quality compost before planting. I have added compost to my Square Foot Garden beds and then planted cabbage (which I started indoors from seed), peas, lettuce, and arugula. In containers use good quality potting soil – not garden soil.
When you see something under two headings it is because it can be planted at either time.
Succession plant: Plant multiple crops, one after the other, to get a longer harvest.
Early Spring – as soon as the soil is workable (you don’t get to actually play in the mud when planting). In my area beginning 2 – 2/12 months before the last average frost date.
Arugula – succession plant
Kiwi – hardy Kiwi survives the winter in colder climates including parts of Utah and Alaska
Peas – traditionally planted by St Patrick’s Day in my USDA zone 5/6 area
Spring. In my area beginning about two months before the last average frost date.
Cilantro – succession plant
Dill – succession plant
Garlic (in my area – Utah – fall is considered a better time)
Onions – bulbing
Perennial onions – multiplier (Egyptian and potato onions)
Sunchokes (Jerusalem artichokes)
Summer – after all danger of frost is past – although it is after the average frost date still watch the weather just in case Check for your last average frost date.
Squash – winter and summer
Late Summer – as weather begins cools off. In my area about 2 months before the first Fall frost.
Early Fall – good time to plant for next year, roots get established for a great start in the spring. In my area beginning about one month before the first Fall frost.
Perennial herbs and flowers
Spring blooming bulbs – most must be planted in the fall and experience a cold period although the roots are still growing over winter
Beuna Tomalino, Garden Coach, https://gardeninspire.com