Final answer:
The quotation that conflicts with the information given in the text is 'B. Watering your plants twice a day is essential', as some plants need adaptations to reduce transpiration and conserve water, making twice a day watering excessive for those plants.
Step-by-step explanation:
From the information provided, the quotation from a gardener that conflicts with information given in the text is B. Watering your plants twice a day is essential. This statement conflicts with the description of plants that survive in harsh conditions such like desert climates. According to the text, to survive in such environments, plants typically need deep roots, reduced foliage, and fleshy leaves with sunken stomata to reduce water loss through transpiration. Watering plants from arid climates twice a day would likely be excessive and could lead to problems such as root rot or fungal growth, which is contradictory to the adaptations these plants have for conserving water. In a typical gardening scenario, watering frequency greatly depends on numerous factors, including the type of plants, the climate, the weather, and the season. Therefore, stating that watering your plants twice a day is essential might not always be accurate or advisable.
The other options presented, such as C. Pruning should only be done in the winter months and D. Fertilizing every week leads to the healthiest plants, may vary depending on the plant species and the gardening context, but they are not inherently in conflict with the text provided.