What to grow in a summer vegetable garden
The sun is at its highest and most direct, and the days are the longest of the year. This is when the classic full-sun vegetables — the ones that genuinely want six or more hours of direct light — come into their own.
When is summer, where you are
In the northern hemisphere, summer runs roughly June to August. In the southern hemisphere, roughly December to February. Either way, it is the season with the highest sun and the shortest shadows — the opposite of what the same fence or tree does to a bed in midwinter.
What to plant, and how much sun it needs
| Vegetable | Sun needed | Notes |
|---|---|---|
| Tomatoes | 6 hours + | Consistent watering matters as much as sun once fruit is setting. |
| Capsicum (bell peppers) & chillies | 6 hours + | Slower to get going than tomatoes; reward a warm, full-sun spot. |
| Eggplant | 6 hours + | Needs sustained heat and light to size up properly. |
| Zucchini & summer squash | 6 hours + | Fast-growing and productive; keeps fruiting as long as the sun and water hold up. |
| Cucumber | 4 – 6 hours | Tolerates part sun; in very hot climates the harshest all-day sun can scorch leaves — see the heat guide below. |
| Beans (climbing & bush) | 6 hours + | Reliable and productive in a genuinely full-sun bed. |
| Sweetcorn | 6 hours + | Plant in blocks rather than single rows — it needs neighbours nearby for the wind to pollinate it. |
| Basil | 6 hours + | Bolts (runs to flower) fast once the weather is consistently hot. |
| Rosemary & lavender | 6 hours + | Once established, both genuinely enjoy real heat. |
| Pumpkin & melons | 6 hours + | Start now for an autumn harvest — they need the whole summer to size up. |
Sun needs are a general guide. Your climate, variety and soil all matter too — this is where to start, not the whole answer.
When full sun becomes too much sun
Six-plus hours of gentle morning sun is a different thing from six-plus hours of harsh afternoon sun. In genuinely hot climates, even fruiting crops can scorch or drop flowers in unbroken all-day summer sun, and leafy crops nearby will struggle well before that. If a bed is showing wilting that does not recover by evening, pale or scorched patches on exposed fruit, or flowers dropping before they set, see beating the heat for a shading and watering plan.