What to plant this week in Fredericton, NB
Fredericton gardeners in zone 5a are navigating a deceptive midsummer window where late-spring frosts have passed, but the air still holds that crisp autumn chill approaching our October 8th first frost. While many warm-weather crops like basil and beans are thriving now, you must remain vigilant against early cooling nights that could damage tender varieties before our hard freeze hits.
The next 7 days
Fredericton, NBGrowing in Fredericton right now
- Protect your late-planted melons, squash, and peppers with row covers tonight if temperatures dip below freezing after sunset, as these frost-sensitive items appear on this week's harvest list despite the date.
- Take advantage of the dry summer soil typical of New Brunswick to water deeply in the mornings rather than evenings to reduce fungal pressure on our heavy clay-loam gardens.
- Begin rotating your potato and parsnip beds now; these staples listed for harvest soon need space preparation before we plant garlic or fall crops next season.
Sow this week
No direct sowing windows open this week.
Transplant this week
Nothing is due to go out this week.
Harvest soon
44 crops- Basil
- Borage
- Brussels Sprouts
- 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)
- Habanero Pepper
- Honeydew Melon
- Leek
- Lima Bean
- Lisianthus (Prairie Gentian)
- Loofah (Luffa)
- Nasturtium
- Ornamental Sweet Potato Vine
- Parsnip
- Pole Bean
- Potato
- Pumpkin
- Roselle (Cranberry Hibiscus)
- Scarlet Runner Bean
- Shiso (Japanese Basil)
- Summer Savory
- Sunflower
- Sweet Corn
- Thai Basil
- Vinca (Madagascar Periwinkle)
- Watermelon
- Winter Squash
- Yellow Summer Squash
- Zinnia
- Zucchini
Seasonal tips
- Focus on soil preparation now by adding compost and organic matter to improve drainage before spring thaw.
- Clean up garden debris and remove winter weeds that may have survived under snow cover.
- Plan your succession planting schedule based on the May 8th last frost date for warm-weather crops.
Pest & disease watch
- Watch for aphid colonies forming on the leaves of basil, cosmos, and zinnias as heat builds up in our river valley microclimate.
- Monitor squash vine borers attacking cucumbers, pumpkins, and summer squashes which are currently abundant in local markets but vulnerable right now.
- Check bean poles and trellises for spider mites on pole beans and bush beans before their pods begin maturing.
Watering this week
Skip outdoor watering entirely until the ground thaws, but ensure storage areas stay dry.
Use this quiet time to order seeds for your summer crops like Watermelon, Zucchini, and Sunflower so they arrive by late winter.
Fredericton gardening questions
3Can I still start seeds indoors this week for a late fall harvest?
No, we are past the ideal window for starting most cool-season crops; however, you can direct sow hardy varieties like parsnips or leeks outdoors now if your soil is workable.
When should I stop watering my winter squash and pumpkins listed for harvest soon?
Cut off all irrigation about two weeks before harvesting to let the skins toughen against our damp Fredericton autumn rains, typically around mid-October.
My ghost peppers and habaneros are fruiting now—what is the best way to protect them from frost?
Cover individual plants with clear plastic cloches or heavy row covers immediately after sunset, removing them during the day if temperatures rise above freezing.
Other cities in zone 5a
6See the full zone 5a guide → · Plan your Fredericton garden in SproutGuide →