When vegetative starts?

good day growmie, veg stage is the stage when plants grow in to maturity seedling is first week and then you get the veg, stage (usually till week 5 with autos) when u see pistels .. ist blooming and is becoming a woman! Goodluck

"vegetative growth" - stem elongation and leaf growth. This even continue after it goes into bloom/flower phase. vege phase or seedling stage is irrelevant. These are just labels for general ideas. There is no hard line in the sand that defines each. if the plant asks for more (paling or stretching) you give it more of what it needs regardless of what the technical term is for its current life stage. Worry about cause and effect not terminology. Life is a spectrum, not binary.

Everything a seed needs to germinate is stored in the seed itself. Enough juice to get the cotyledons into a photosynthetic position. To create more energy. Seedling stage is delicate, the plant starts to perform gas exchange and begins to grow. But it operates on a last second, sucking up whatever it finds In immediate location. Cannabis plants store alot of nutrients in their stems and leafs, almost like warehouse storage. Until the plant is big enough to keep a storage it won't even be able to store much of its captured energy from photosynthesis. Once she has 4/5 internodes then she is imo at a stage where she can perform full vegetative duties and is now ready for high intensity metrics. It depends how fast she grows. How fast that will be is a combination of genetics and knowledge of how to optimize environmental conditions for growth. Phosphorus and oxygenation. Key elements to rapid seedling development in early life.

The vegetative stage usually starts once the seedling has developed a few sets of true leaves and is actively growing. A common sign is when the plant has at least one set of 3-fingered leaves — that’s when it shifts from seedling to veg for most growers. Some go by 5-fingered leaves or size, but honestly, it's more about growth pattern than leaf count. So yeah, it can vary a bit by strain, but if it's putting out new nodes regularly and focusing on leaves and stems — you're in veg