What to plant this week in Toledo, OH
Toledo gardeners in Zone 6b are navigating the tail end of spring with an average last frost date of April 21, meaning late frosts can still threaten early crops. This week is critical for moving out warm-season transplants like tomatoes and peppers while focusing harvest efforts on maturing beans, squash, and melons that have established roots.
The next 7 days
Toledo, OHGrowing in Toledo right now
- The Maumee River corridor brings cooler air masses than the open plains, so protect young seedlings of basil and edamame with row covers if temps dip near zero overnight.
- Toledo's heavy clay loam retains moisture well but drains poorly during our spring snowmelt; ensure drainage holes are clear in pots for container-grown zucchini and pumpkins before adding water.
- With soil still warming up slowly, avoid deep digging on wet days to prevent compaction that can hinder root growth for sunflowers and sweet corn.
- Monitor humidity levels closely, as the humid continental climate encourages fungal issues on leafy greens like parsnips and celery if air circulation is poor in dense plantings.
Sow this week
No direct sowing windows open this week.
Transplant this week
Nothing is due to go out this week.
Harvest soon
45 crops- Basil
- Borage
- Bush Bean
- Cantaloupe
- Celery
- Cleome (Spider Flower)
- Cosmos
- Cowpea (Black-Eyed Pea)
- Cucumber
- Dahlia
- Edamame
- Fennel
- Flour Corn
- French Marigold
- Garden Verbena
- Garlic
- Ghost Pepper (Bhut Jolokia)
- Gourd (Ornamental/Bottle)
- Honeydew Melon
- Leek
- Lima Bean
- Lisianthus (Prairie Gentian)
- Loofah (Luffa)
- Malabar Spinach
- Nasturtium
- Okra
- Ornamental Sweet Potato Vine
- Parsnip
- Pole Bean
- Potato
- Pumpkin
- Roselle (Cranberry Hibiscus)
- Scarlet Runner Bean
- Shiso (Japanese Basil)
- Summer Savory
- Sunflower
- Sweet Corn
- Sweet Potato
- Thai Basil
- Vinca (Madagascar Periwinkle)
- Watermelon
- Winter Squash
- Yellow Summer Squash
- Zinnia
- Zucchini
Seasonal tips
- Keep a close eye on pollinator-friendly flowers like Cosmos and Zinnia to ensure good seed set.
- Harvest bush beans and cucumbers frequently to encourage continued production throughout summer.
- Protect young transplants from late spring chill with row covers if an unexpected cold snap occurs.
- Plan succession sowing for cool-season crops now so they are ready as the weather cools in October.
Pest & disease watch
- Watch for aphids clustering on new growth of basil and nasturtium, which thrive in Toledo's spring warmth before natural predators fully emerge.
- Cutworms often attack the stems of young transplants like okra and marigolds right after evening when temperatures rise above 40°F.
- Early powdery mildew can appear on cucumbers and melons if high humidity persists combined with warm nights typical of late April.
Watering this week
Water deeply in the morning to reduce evaporation and prevent fungal issues on leafy greens.
Save seeds from your best-performing varieties like French Marigold and Zinnia to start your next season's garden early.
Toledo gardening questions
3Can I still plant garlic or parsnips in Toledo this week?
No, garlic and parsnips are not listed for sowing or transplanting at this time; they require cooler soil temperatures earlier in the season. Wait until mid-to-late summer to harvest these root crops that were planted last autumn.
My cantaloupe and watermelon plants look stressed; is it too late to add fertilizer?
Since harvest is soon for melons, avoid heavy nitrogen fertilizers which promote leaf growth over fruit. Instead, apply a light potassium boost if the soil dries out rapidly due to Toledo's variable rainfall patterns.
How do I handle frost threats when the average last frost is April 21?
Even though the date has passed, unexpected cold snaps can still occur in the Maumee Valley; use floating row covers or cloches over sensitive crops like bush beans and edamame during the day.
Other cities in zone 6b
12See the full zone 6b guide → · Plan your Toledo garden in SproutGuide →