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Seeds need to be planted at the correct depth to ensure they receive the right amount of moisture, heat, and oxygen necessary for germination.

Soil pH can affect nutrient availability and microbial activity. Most seeds prefer a slightly acidic to neutral pH to germinate successfully.

Seeds must be fully matured to have accumulated enough food reserves and developed enough to germinate; immature seeds often fail to germinate.

Some seeds contain chemical inhibitors that prevent germination until conditions are favorable, often requiring certain processes like scarification or stratification to remove these inhibitors.

Most seeds have an optimal temperature range for germination. Too cold or too hot temperatures can prevent germination or slow down the process significantly.

Water is essential for germination as it triggers metabolic processes necessary for growth, and aids in the softening of the seed coat, allowing for the embryonic root to emerge.

Seeds need oxygen for respiration, which provides energy necessary for growth. Poorly aerated soils can hinder germination due to lack of oxygen.

Appropriate moisture in the soil is crucial for germination. Too much or too little water can impede the germination process or cause seeds to rot.

In a natural setting, competition for resources like light, space, and nutrients with other seeds or plants can affect germination success.