Garden Plan Pro
Available for: iPad, iPhone or Mac
We'll admit, $9.99 is a bit steep for an app, but when you don't know when to plant something or when to harvest it, this app may be the only thing standing between your black thumb and a burn pile of dead plant life. Using data from more than 6,500 weather stations in 20 countries, Garden Plan Pro adapts to your climate, giving recommended planting and harvesting dates for your area. It can recommend an ideal garden layout, issue planting reminders and even offer bits of advice on how to get the most out of your plot. If something like this is all that's keeping your lifeless garden from becoming a great garden, consider the investment.