I germinated a seed and the root came out after a few days so I planted it, and it's grown, it's like 2 inches tall, but the seed casing is still on the top. It seems to know where the light it and has grown towards the brighter light but the casing is still covering the leaves. I tried gently prying it off but it wouldn't budge so I didn't want to force it. Has anybody else ever had this problem?