![]() Keep the 6-8 inches of topsoil moist as a guide until the seedlings have grown their roots. ![]() Their growth slows down, and they are likely to die soon.įull bloom petunias need watering once every 7-10 days, but damp soil is a primary requirement for seedlings until they have established their roots. You would notice the same symptoms when the seedlings do not get enough water. The seedlings will damage their roots when left in the same situation for extended periods. On the other hand, petunia seedlings in an overwatered environment may show symptoms such as white spots on leaves and yellowing leaves. When the soil is too wet, the seeds may not even begin to develop but rot. ![]() Petunia seedlings need damp soil to grow fast, but it does no good when you overwater. At the same time, watch out for bad odor, moss growth, and insects which are common signs of poor soil quality. Peat moss gives lasting moisture as it decomposes slowly, whereas vermiculite holds air that helps fluff the soil mix.Ĭompact and dry soil does not make a suitable environment for petunia seedlings. To make a seed starting soil from scratch, combine two parts, each of compost and peat moss, and add only one part of vermiculite.Ĭompost provides nutrients for the seedlings and can hold water well. Instead, you can buy a seed starting mix or make one. It is not recommended to reuse soil as well. The ideal soil for these flowering annuals should be moist but drains very well. Petunia seeds will develop faster on healthy, fertilized soil. So what can you do to avoid petunia seedlings that are not growing? In some cases, the seeds rot even before they begin to germinate. Otherwise, the seedlings may develop slowly. Petunias are generally easy to grow under ideal conditions. ![]() Read through our post to learn how to plant petunias properly and make them grow faster. Petunias can be challenging to grow when unfamiliar with their needs, but we're here to give you all the information you need. Here's what you can do when petunia seedlings are not growing. Sometimes, planting the seeds too deep also slows down their development. When petunia seedlings are not growing, it could be due to inappropriate temperature, poor soil quality, or excessive watering. We know the reasons behind this and have researched what you can do so they would continue to thrive and bloom. If you are wondering why this happens and want to know what to do, you landed on the right page. During their early stage, the seedlings could suddenly stop growing. Petunias may be reliable annuals, but they are sensitive as seedlings. ![]()
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