What plants are difficult or impossible to grow in warm climates (zones 10/11) that are commonly grown in cooler climates?

In zones 10/11, plants requiring prolonged chilling periods, like many deciduous fruit trees (e.g., apples, cherries, pears), struggle. These plants need a specific number of hours below a certain temperature to break dormancy and fruit. Similarly, certain cool-season annuals such as tulips and daffodils, while often forced, perform poorly long-term as they require a cold winter to recharge their bulbs for future blooms.

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