

They were already infected and just hadn’t died yet. Squishy soil is a fungal haven.Įven after you change your watering practices, you will probably lose additional plants. You want the soil moist enough to germinate the seed and keep the seedling from wilting, but not squishy. Water Differentlyįor the flats of seedlings that have not died yet, you need to reduce the amount you are watering and make sure you do not splash dirt on the leaves of the plant when watering. Discard the dirt they were growing in, too, and bleach the growing tray well so the fungus cannot live in it until you use it again. No use spreading the infection to your compost heap. Once the seedlings start wilting, the only thing you can do is isolate that flat of plants from the others and change your watering to reduce the moisture around the seedlings that remain. Either way, you end up with nothing to show for your efforts. Leave at least three inches of space between each flower to prevent overcrowding. Certain marigold varieties can grow quite tall, so stick to varieties like French marigolds and Signet marigolds for smaller pots. In others, it waits and ambushes the seedlings. Brighten up your patio or doorstep with these fall-blooming beauties. Sometimes, the fungi will rot out the seeds, making them appear to have a poor germination rate. You want the soil wet enough that the seeds germinate and grow, but not soggy. Just Right Moistureįinally, be careful of your soil moisture. You should also use a pasteurized soil mixture for the same reason. Reusing soil trays to start your seeds without bleaching them out first will spread it year to year. This occurs in exactly the conditions that are most common around seedlings: high humidity, lots of plants together, poor ventilation, and compaction of the soil. Excessive Soil MoistureĮxcessive soil moisture is the culprit. At or just above the soil level, the plant stem pinches in and turns brown, the plant keels over, and your beautiful seedling is no more. All three are fungi that infect the roots of the baby plant, then spread upwards. Damping Offĭamping off is an umbrella name for an infection caused by one of three organisms: Pythium species, Phytophthora species, or Rhozoctonia solani. You have had an encounter with damping off. A few hours later, they were sprawled over the ground like drunken sailors, never to rise again. Have you ever had your seedlings wilt and fall over suddenly? They were growing great guns when you checked on them.
