What plant is this? HELP! I planted alyssum, marigolds, calendula, and nasturtiums. These little sproutlings have shown up everywhere. It’s been 6 days since I planted seeds. Are these mine? Or are they weeds? It’s a raised planter box so nothing from my yard could’ve gotten in. I did use a neighbors compost so could it be grass/weeds from that? I pulled one so you guys can see the root. These are what they look like in my box. As you can see in the background, they’re everywhere. Important note: I used rice hulls for aeration. I THINK they’re sprouting from those. But I thought rice hulls were supposed to be sterile?