Timing is crucial when it comes to planting Sunflowers, as they are warm-weather plants with specific planting requirements.
So, when exactly is the right time to plant sunflowers outside?
Answer: The best time to plant Sunflowers is in the spring when the soil has warmed up and there is no longer a threat of frost. In colder regions, start seeds indoors a few weeks before the last expected frost date to get a head start on the growing season. Further, if you want blooms all spring and summer long, plant more seeds every couple of weeks.
Suggested Reading: The Ultimate Guide to Growing Sunflowers