Zoe Lowe
Seed packets say “plant after last frost.” Soil temperature is the real trigger. A $10 probe thermometer eliminates more planting failures than any other tool in the garden. Most seed germination failures trace back to soil temperature, not timing on the calendar. According to research from the University of California, Davis Department of Vegetable Crops, … Read more
Peas germinate in soil as cold as 40°F but stop producing once air temperatures exceed 85°F. That narrow window makes the sowing date the single biggest factor in harvest size — and for Zones 5–7, that date is this week. St. Patrick’s Day has been the traditional American pea-planting date for generations, and the timing … Read more
Fall-planted garlic across Zones 5–7 is emerging now. Three problems — frost heaving, yellow foliage, and bulb rot — are easiest to catch and fix in the next 7–10 days. After that, the damage compounds. Garlic planted last fall is breaking dormancy across USDA Zones 5 through 7 as soil temperatures climb above 40°F. According … Read more
Most compost piles across Zones 4–7 spent the last 3–4 months frozen or near-dormant. Reactivation takes one afternoon and three specific inputs — but the order matters, and skipping a step delays usable compost by 4–6 weeks. Air temperatures across USDA Zones 5 through 7 are crossing the 50°F threshold this week — the point … Read more
Peppers need 8–10 weeks indoors before transplant. Tomatoes need 6–8. Starting both in March puts Zones 5–7 on schedule — but the exact week depends on the zone, and getting it wrong costs 2–4 weeks of harvest. Across USDA Zones 5 through 7, average last frost dates fall between late April and late May. That … Read more
A mild afternoon means nothing if the soil is still cold, wet, and slow. Iowa State Extension notes that cool-season vegetables that are direct-sown can go in once soil temperatures reach about 50°F, and it explicitly warns not to work garden soil when it is overly wet. That matters because early spring failures are often … Read more
Soil temperatures in the Northeast and Midwest crossed 40°F this week. That is the threshold at which overwintered slug eggs begin hatching — weeks before most gardeners start thinking about pest control. According to the Oregon State University Extension Service, slug eggs laid in fall overwinter in the soil and hatch rapidly once spring moisture … Read more
Unsupported peas lose 30–40% of harvestable pods to ground rot and pest damage. Here are three proven support methods, ranked by performance, with setup instructions for March and April planting. Pea tendrils begin reaching for support within 10–14 days of emergence. Without a structure in place at sowing time, vines collapse under their own weight … Read more
Onion sets go in the ground as soon as soil is workable — weeks before last frost. Early planting produces larger bulbs because onions need maximum leaf growth before lengthening days trigger bulbing. Onion bulb size depends directly on how large the plant is when day length reaches the bulbing threshold — roughly 14 hours … Read more
Giant sunflower varieties that top out at 3–4 feet instead of 8–12 are not defective. Something went wrong during establishment — and in most cases, it happened in the first 3 weeks after planting. Every season, gardeners who planted mammoth or giant sunflower seed expect towering 8- to 12-foot stalks with dinner plate-sized heads. Instead, … Read more