Seed Starting Guide for Upstate New York Gardeners

Mar 3
2 min read

Updated: Mar 23

A Month-by-Month Planting Calendar for Saratoga Springs and Upstate New York Gardeners.

Spring is almost here — which means it's officially time for seed starting indoors in New York State! If you're planning your spring garden in Saratoga Springs or the greater Upstate New York region, starting seeds indoors now will give your vegetables, herbs, and flowers a strong, healthy head start before planting outdoors.

Knowing the right timing is key for successful seed starting in New York. Our region typically falls within USDA Zones 4-5, with an average last frost date in mid-May. To help you plan accurately, we recommend the Saratoga Springs planting calendar from The Old Farmer's Almanac — it's the most reliable resource for our specific frost dates.

Saratoga Springs, New York Seed Starting Calendar

In our region, the average last frost falls around May 10–15. That date is your anchor for everything. Here's when to start the most common vegetables and flowers indoors:

February (10–12 weeks before last frost)

Onions and leeks
Celery and celeriac
Slow-growing annual flowers like pansies and snapdragons

March (8–10 weeks before last frost)

Tomatoes — start around March 1–15 for strong transplants by mid-May
Peppers and eggplant — these need the longest head start
Petunias and other slow annual flowers

Early April (4–6 weeks before last frost)

Cucumbers and summer squash
Melons
Basil and most herbs
Fast-growing annuals like marigolds and zinnias

Direct sow outdoors (after May 15)

Beans, peas, and corn — direct sow only, don't transplant
Sunflowers
Carrots, beets, and radishes

A few tips for upstate New York specifically:

Our springs can be unpredictable — a warm April can be followed by a hard frost in the first week of May. Don't rush transplants outdoors before the 15th and always harden seedlings off for 7–10 days before planting. Set them outside in a sheltered spot for a few hours a day, increasing exposure gradually.

If you're starting tomatoes, aim for 6–8 weeks indoors — no more. Overgrown, leggy transplants struggle more than compact ones. A 6-inch tomato seedling with a thick stem will outperform a 12-inch lanky one every time. One more thing worth knowing: Saratoga Springs sits in a frost pocket — cold air settles in low-lying areas and can linger longer than the calendar suggests. If your garden is in a low spot, add a week of buffer to all your transplant dates.

At Sunnyside Gardens in Saratoga Springs, we carry everything you need for seed starting — including premium seed-starting soil, trays, humidity domes, grow lights, plant labels, and complete seed starting kits. Whether you're growing tomatoes, peppers, cucumbers, herbs, or annual flowers, we have the supplies and local expertise to help your seedlings thrive.

If you're searching for when to start seeds in NYS or looking for reliable Upstate New York gardening advice, stop in or reach out — we're here to help you grow with confidence this season.

Spring is right around the corner — let's get growing!