May is here—and the garden is calling! This is one of the most exciting times of year, when the soil warms up, the days grow longer, and everything seems ready to burst into life. Whether you’re growing veggies, herbs, flowers, or tending a greenhouse, May is packed with opportunities to sow, grow, and thrive.
Here’s your May garden checklist to help you make the most of this magical month.
🌱 Seeds to Sow in May
It’s prime planting time! Here’s what you can confidently sow this month for a bountiful summer garden:
🥕 Vegetables
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Beans
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Beets
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Carrots
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Corn
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Cucumbers
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Lettuce & kale
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Pumpkins & squash
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Swiss chard
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Radishes
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Turnips
🌿 Herbs
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Basil
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Dill
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Cilantro
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Parsley
🌸 Flowers
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Nasturtiums
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Sunflowers
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Sweet peas (in cooler areas)
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Calendula
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Zinnias
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Cosmos
🧤 Garden Tasks for May
There’s no shortage of to-dos this month! Here’s what to prioritize in the garden:
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Harden off seedlings before transplanting them outdoors
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Direct sow warm-season crops
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Pinch back herbs for bushier growth
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Mulch your beds to help retain moisture and suppress weeds
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Add trellises and supports for peas, tomatoes, and climbing flowers
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Keep an eye out for pests like aphids, flea beetles, and slugs
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Feed your soil with compost or organic fertilizer
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Start succession sowing greens every 2–3 weeks for continuous harvests
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Most importantly—pause and enjoy the beauty you’ve created 🌼
🏡 Greenhouse Tasks
If you’re lucky enough to have a greenhouse, May is when things heat up (literally)! Keep these tasks in mind:
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Open vents and doors daily to prevent overheating
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Water early in the day to avoid fungal issues
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Start warm-loving crops like melons and peppers
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Monitor humidity levels and maintain good airflow
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Fertilize container plants as needed
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Begin hardening off greenhouse seedlings before transplanting them outside
🎥 Big News: My YouTube Channel Has Launched!
I’m so excited to announce that I’ve officially launched my YouTube channel! 🎉
You can now watch garden walkthroughs, DIY projects, and my favorite tips and tricks—perfect for visual learners or anyone wanting a little extra garden inspiration.
👉 Subscribe @TheKnottyGarden
Your support means the world to me—please head over, subscribe, and join me as we keep growing together!
📥 New! Printable Seasonal Planting Charts on Etsy
I’m thrilled to share my brand-new Printable Seasonal Planting Charts—now available in my Etsy shop! 🌿✨
These beautifully designed, easy-to-use charts cover what to plant each season, so you’ll always know the right crops to sow, indoors or out. Whether you’re a beginner or a seasoned gardener, they’ll help you stay organized and maximize your harvests all year long.
👉 Grab yours here on Etsy
✨ Perfect for printing and pinning on your fridge, greenhouse wall, or garden journal!
Thank you for supporting my small business and helping me keep the garden magic growing. 💚