Ask a Master Gardener: What is succession planting? Thu, 07/22/2021 - 1:19pm meganj Plants such as cilantro and onions can share the same space in the garden as they mature at different times so don't compete for space. Photo / Bonnie Kirn Donahue The full text of this article is only available to online subscribers. Are you an online subscriber? Login using the form below. Click here to learn more about our subscription options. If you have a print subscription, you can now add an online subscription at no additional charge! Just email us with your name and mailing address to set it up.