What to Grow in Late Summer: 5 Seeds Worth Sowing Right Now

Late summer feels like the garden's exhale — the heat of peak season is easing, the light is shifting, and the soil is warm and ready. For urban growers, this is one of the most overlooked windows of the year. The right seeds planted now can carry you all the way through autumn with fresh harvests and color.

Here are five worth sowing before the season turns.

1. Coleus — For Color Without Flowers

Coleus germinates fast in warm soil and puts on a show of dramatic, multicolored foliage that only intensifies as temperatures drop slightly. Start seeds now and you'll have full, lush plants by the time the summer annuals start to fade. They thrive in partial shade — ideal for apartment balconies and north-facing windowsills.

Days to germination: 10–14 days | Best placement: bright indirect light

2. Catnip — The Perennial That Rewards Twice

Catnip sown in late summer establishes roots before winter, making it one of the few herbs that actually benefits from a late start. By spring, it'll be one of your most vigorous plants. In the meantime, the aromatic foliage makes the space smell like a calm herb garden — and your cat, if you have one, will be very pleased.

Days to germination: 7–14 days | Best placement: full sun to light shade

3. Thyme — The Set-and-Forget Herb

Thyme is extraordinarily cold-hardy and one of the easiest herbs to keep going year-round in containers. Sow now, water lightly, and by October you'll have fragrant, harvestable sprigs for soups, roasts, and teas. It slows in deep winter but rarely dies — and comes back reliably in spring.

Days to germination: 14–21 days | Best placement: full sun, well-draining soil

4. Pansy — The Season Extender

Pansies are built for cool weather. Seeds sown now will produce seedlings ready to transplant just as the heat breaks — and they'll bloom right through the first frosts. Their jewel-toned faces in burgundy, violet, and yellow are some of the most cheerful things you can put on a balcony rail in October.

Days to germination: 10–14 days | Best placement: cool temps, full sun to partial shade

5. Petunia — For One Last Wave of Color

If you still have a sunny spot, a late sowing of compact petunias can give you trailing color through early autumn. They won't last as long as a spring planting, but they're fast-growing and cheerful — and the trumpets of color against a cooling sky are worth the few weeks of effort.

Days to germination: 10–12 days | Best placement: full sun minimum 6 hours

The Late Summer Mindset

The mistake most growers make is thinking the season is winding down in August. It isn't — it's just changing. The crops that thrive now are different from the ones that thrived in June. Pay attention to what the cooler nights are asking for, and your containers will keep rewarding you longer than you'd expect.

All five varieties above are part of the Vyrgromm single-seed series — individually tested, non-GMO, and sized for the urban grower who wants to start small and grow confidently.