Dwarf marigold seedlings first show a pair of oval, smooth-edged leaves called cotyledons (seed leaves). These do not resemble the mature foliage.

At this stage, only the two cotyledons are visible.

The upper leaves with jagged edges are the true leaves. The lower oval leaves are the cotyledons.
View all four stages here: Marigold seedling gallery.
Single Brown Leaf on Young Phalaenopsis: Simple Fix
Phalaenopsis Lost All Leaves: Crown Recovery & Keiki Chance
New Phalaenopsis with Multiple Leaf Issues: Fungal Infection Likely Terminal
Phalaenopsis Losing Bottom Leaves: Fungus or Natural Aging?
Phalaenopsis Leaves Splitting and Dying Rapidly: Fungus or Humidity?
Phalaenopsis Bottom Leaf Loss: Normal Aging vs. Root Problems
Skeletonized Rose Leaves: Caterpillar Damage
Rose Leaf Roll Without Visible Pests: Weather or Chemical Stress?
Flowering Crabapple Yellow Spots: Leaf Spot Fungus Management
Maple Leaf Spot: Phyllosticta—Mostly Cosmetic
Maple Petiole Borer: Natural and Self-Limiting
Copyright © www.100flowers.win Botanic Garden All Rights Reserved