What to plant this week in Boise, ID
With the average last frost date for Boise landing on April 3, most spring crops are still waiting out the chill of this week's potential snow squalls. Now is only the final window to sow garlic cloves in your beds before the ground freezes again.
The next 7 days
Boise, IDGrowing in Boise right now
- Boise soils can be heavy with clay near riverbanks; incorporate plenty of coarse sand or compost now to improve drainage for winter crops.
- Take advantage of the city's semi-arid climate by applying a thick layer of mulch to retain moisture and protect emerging garlic roots from rapid freeze-thaw cycles.
- While transplanting isn't active this week, prepare your soil beds for next week by tilling in organic matter while the ground is still workable.
Sow this week
1 crops- Garlic
Transplant this week
Nothing is due to go out this week.
Harvest soon
2 crops- Daikon Radish
- Garlic
Seasonal tips
- Plant garlic cloves now to ensure a strong spring harvest next year.
- Apply winter mulch around perennials once the soil has frozen solid to protect roots from heaving.
- Divide biennial plants like sweet Williams if they have finished flowering this season.
Pest & disease watch
- Watch for early-season aphid colonies forming on overwintered weeds that may harbor viruses for spring transplants.
- Monitor garlic fields for onion thrips, which often emerge as temperatures climb above freezing during sunny spells.
Watering this week
Water deeply but infrequently, allowing the top inch of soil to dry out between sessions to prevent root rot in cool, damp conditions.
Mark your sown garlic spots clearly now so you won't forget where they are when digging for spring onions later!
Boise gardening questions
3Can I plant tomatoes or peppers this week in Boise?
No, the ground is still too cold and risk of frost remains until after April 3. Wait two weeks to transplant warm-season crops when soil temperatures are consistently above 50°F.
How do I protect my garden from sudden cold snaps typical of Boise winters?
You can pull early varieties like Daikon Radish now, but keep your garlic in the ground until leaves begin to yellow and fall over naturally later this month.
What is the best way to prepare my soil for next spring's vegetable garden?
Focus on breaking up compacted clay layers now while the soil isn't frozen solid, and add compost to boost nutrient levels before the heavy snows arrive.
Other cities in zone 7a
12See the full zone 7a guide → · Plan your Boise garden in SproutGuide →