I sowed a large bed of zinnias, thinning them as they grew, but they developed purple spots on the leaves and are even dead looking near the soil although they are still flowering profusely. I made the mistake of watering them with a sprinkler when they got dry as it's a large area to cover. I have seen gorgeous zinnias in other gardens that look like they're supposed to. I want to do a bed again next year and my husband is going to put in a drip system to irrigate and also amend the soil better. Any advice for better results would be appreciated. Also, can I use the seeds from this year or will I just be perpetuating the same problems?
I sowed a large bed of zinnias, thinning them as they grew, but they developed purple spots on the leaves and are even dead looking near the soil although they are still flowering profusely. I made the mistake of watering them with a sprinkler when they got dry as it's a large area to cover. I have seen gorgeous zinnias in other gardens that look like they're supposed to. I want to do a bed again next year and my husband is going to put in a drip system to irrigate and also amend the soil better. Any advice for better results would be appreciated. Also, can I use the seeds from this year or will I just be perpetuating the same problems?