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When to plant Begonias in Stevens County, KS

Plant Begonias in Stevens County, between April 27 and May 11 — the only viable window. Zone 6b's short season (179 frost-free days) rules out a fall crop.

When to Plant Begonias in Stevens County, KS

Stevens County, Kansas Zone 6b June

June in Stevens County, Kansas — your action list

June is a pivotal month for Stevens County, Kansas gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 20
Avg. first frost October 16
Soil temp (4") 74°F
Watering High
Pest pressure High
Daylight 14.5 hrs
  1. Begin indoor sowing: begonias

    A seed-starting mix and a sunny window (or a grow light) are all you need. Keep soil warm — around 70°F — for fast germination.

Get ahead of July
  • First harvests: begonias

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Wax begonias (Begonia × semperflorens) are the workhorse shade bedding plant of American horticulture, offering continuous bloom from transplant to hard frost. Bronze or green-leaved varieties perform well from deep shade to full sun (in northern zones) and tolerate summer humidity better than most cool- season flowers. A staple of mass plantings, containers, and window boxes.

Stevens County, Kansas is in USDA Zone 6b. The average last spring frost is April 20 and the first fall frost is October 16, giving you a growing season of approximately 179 days.

At an elevation of 1,123 feet, Stevens County receives approximately 31.9 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Begonias during the growing season.

Annual Blooms in Multi-season Pollinator-friendly Deer-resistant
Stevens County, KS (Zone 6b) Moderate season
179 days
Last Spring Frost April 20
179 growing days
First Fall Frost October 16

Stevens County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.8

Drainage

Well Drained

Begonias Planting Risk Windows

Early Start (70% safe) ✓ Fits season (6 days to spare)
Start indoors: Feb 4 Transplant: Apr 22 🌸 Bloom: Jul 1 – Oct 7
Recommended (50%) ✓ Fits season (4 days to spare)
Start indoors: Feb 9 Transplant: Apr 27 🌸 Bloom: Jul 6 – Oct 12
Safe Start (90%) ✓ Fits season (5 days to spare)
Start indoors: Feb 23 Transplant: May 11 🌸 Bloom: Jul 20 – Oct 26

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Stevens County

How your county's soil matches Begonias's growing requirements.

Soil pH

Your soil pH (6.5–7.8) is more alkaline than Begonias prefers (5.5–6.5). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Stevens County is excellent for Begonias — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Begonias.

Organic Matter

Organic matter is moderate (3.9%). Annual compost additions will help Begonias.

How to Plant Begonias

8"
Between Plants
10"
Between Rows

Succession Planting Begonias

2
successive plantings in your 179-day season

Sow every 8 weeks. Last sowing by Jul 18 to harvest before frost.

Begonias Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,054 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Begonias

Begonias needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Begonias Needs Rainfall You Supplement Action
Jan 2.4" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.9" 0" ❄️ Dormant
Apr 4.3" 3.1" 1.2" 💧 Light watering
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 2.5" 1.8" 💧 Light watering
Jul 4.3" 2.7" 1.6" 💧 Light watering
Aug 4.3" 3" 1.3" 💧 Light watering
Sep 4.3" 2.5" 1.8" 💧 Light watering
Oct 4.3" 2.8" 1.5" 💧 Light watering
Nov 2.4" 0" ❄️ Dormant
Dec 1.9" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Stevens County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Begonias Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Begonias needs ~1,160 GDD — county provides 2,595 GDD Excellent fit

Begonias Planting Timeline — Stevens County, KS

Begonias Planting Calendar

Activity When Date Range
Start Indoors February 9 Feb 9 – Feb 23
Transplant Outdoors April 27 Apr 27 – May 11
Bloom July 6 Jul 6 – Oct 12

· 8" apart · Rows 10" apart

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March
April Transplant Outdoors
May Transplant Outdoors
June
July Bloom
August Bloom
September Bloom
October Bloom
November
December

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 6b

📆 Growing Season

179 days in Stevens County

Growing Tips for Begonias in Stevens County

Direct sow Begonias outdoors after April 20 in Stevens County when soil has warmed and frost danger has passed.

General growing tips

Start seeds indoors 10–12 weeks before last frost — seed is dust-fine; surface-sow on moist mix under lights, do not cover. Bottom heat (70–75°F) speeds germination. Transplant after frost; begonias are not direct-sown in practice. Pinch seedlings once for branching. Keep soil evenly moist; avoid waterlogged conditions. Bronze-leaf types tolerate more sun; green- leaf types prefer shade to part-sun.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Begonias in Stevens County, KS?

Stevens County is in Zone 6b with an average last frost of April 20. Plan your Begonias planting based on this frost date — see the calendar above for exact timing.

What planting zone is Stevens County, KS?

Stevens County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 20 and first fall frost is October 16.

When should I plant Begonias in Stevens County, KS?

In Stevens County, KS, plant Begonias after the last frost (around April 20) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Stevens County, KS for Begonias?

Stevens County sits in USDA Zone 6b. Begonias grows reliably in zones 2a through 11b, so it's a good fit here.

Can Begonias grow in Stevens County's climate?

Yes — Begonias grows well in Stevens County's temperate climate. Stevens County averages a 179-day frost-free season, with last frost around April 20 and first frost around October 16.

🌱

Your Stevens County Garden Planner — Free

A 22-page printable planner built for Stevens County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Stevens County, KS. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.