Winter varieties of annual plants are planted in autumn, they germinate, and over winter come out as small seedlings, resume growth in spring and are harvested around mid-summer.

Answer

**Step-by-Step Solution:**

1. **Understanding the Growth Cycle of Winter Varieties:**
- Winter varieties of annual plants are specifically adapted to germinate in cooler temperatures. They are typically planted in the autumn season.

2. **Germination in Autumn:**
- When these plants are sown in autumn, they undergo germination during the fall months. The seeds take advantage of the cooler temperatures and moisture available during this season.

3. **Survival Over Winter:**
- After germination, the young seedlings enter a dormant phase during the winter months. They remain small and are able to survive the cold due to their adaptations.

4. **Resuming Growth in Spring:**
- As temperatures rise in spring, these seedlings resume their growth. They begin to develop more leaves and stems, taking advantage of the longer days and increased warmth.

5. **Harvesting in Mid-Summer:**
- By mid-summer, the plants have matured and are ready for harvest. This cycle allows for a successful yield of crops that are specifically suited for winter planting.

6. **Conclusion:**
- The statement provided in the question is true. Winter varieties of annual plants are indeed planted in autumn, germinate, survive as small seedlings over winter, resume growth in spring, and are harvested around mid-summer.

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