Growing Begonias in Zone 4
When to plant and harvest begonias in Zone 4— based on your zone's frost dates.
Zone 4 sits comfortably within begonias' best range (Zones 3–11), so it grows well here on a standard schedule.
Begonias planting calendar for Zone 4
These months are derived from Zone 4's frost dates — last frost around Early – mid May, first frost around Mid September – mid October.
Start indoors
February
Sow outdoors
—
Transplant
May
Harvest
—
Free planting calendar
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A month-by-month Zone 4 chart with begonias already on it — add the rest of your garden, then print it or save it as a PDF.
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Begonias care at a glance
- Sunlight
- Partial shade to full sun; green-leafed types prefer more shade, bronze-leafed types tolerate more sun
- Water
- 1 inch per week, even moisture; do not allow to dry out, but never waterlog
- Spacing
- 8–12 in apart
- Days to maturity
- 12–14 weeks from seed; blooms almost immediately from purchased transplants
- Best zones
- 3–11 (tender perennial grown as annual in frost-prone zones; overwinters in 10–11)
Growing begonias in Zone 4: FAQs
Can you grow begonias in Zone 4?＋
Zone 4 sits comfortably within begonias' best range (Zones 3–11), so it grows well here on a standard schedule.
When should I plant begonias in Zone 4?＋
In Zone 4, start seeds indoors around February. Zone 4's last spring frost is typically Early – mid May and its first fall frost around Mid September – mid October, which sets the planting window.
When to harvest begonias in Zone 4?＋
Harvest timing depends on your planting date and variety — begonias typically matures in 12–14 weeks from seed; blooms almost immediately from purchased transplants. See the full guide for harvest cues.
Full Begonias guide →
Complete care, problems, companions, and harvest tips.
Zone 4 overview →
Frost dates, climate, and everything to grow here.
October in Zone 4 →
What to sow, transplant, and harvest this month.