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When to Plant Begonias in Mineral County, NV

Mineral County, Nevada Zone 7a June

June to-do list for Mineral County, Nevada

We've pulled the most time-sensitive tasks for Mineral County, Nevada this June and put them front and centre. Tackle them in order.

Avg. last frost April 28
Avg. first frost October 10
Soil temp (4") 57°F
Watering Critical
Pest pressure High
Daylight 14.7 hrs
July prep starts now
  • Starting indoors: begonias
  • 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.

Mineral County, Nevada is in USDA Zone 7a. The average last spring frost is April 28 and the first fall frost is October 10, giving you a growing season of approximately 165 days.

At an elevation of 5,832 feet, Mineral County receives approximately 14.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100°F, so Begonias may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Begonias will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Begonias successfully. Mulch heavily to conserve soil moisture.

Annual Blooms in Multi-season Pollinator-friendly Deer-resistant
Mineral County, NV (Zone 7a) Moderate season
165 days
Last Spring Frost April 28
165 growing days
First Fall Frost October 10
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Mineral County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.2-8.2

Drainage

Well Drained

Begonias Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Feb 7 Transplant: Apr 18 🌸 Bloom: Jun 27 – Oct 17
Recommended (50%) ✗ May not fit
Start indoors: Feb 17 Transplant: Apr 28 🌸 Bloom: Jul 7 – Oct 27
Safe Start (90%) ✗ May not fit
Start indoors: Apr 21 Transplant: Jun 30 🌸 Bloom: Sep 8 – Dec 29

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 Mineral County

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

Soil pH

Your soil pH (7.2–8.2) is more alkaline than Begonias prefers (5.5–6.5). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Mineral County warms quickly in spring but drains fast. Begonias will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Begonias.

Organic Matter

Organic matter is low (0.8%). Add 2-3 inches of compost before planting Begonias.

How to Plant Begonias

8"
Between Plants
10"
Between Rows

Succession Planting Begonias

2
successive plantings in your 165-day season

Sow every 8 weeks. Last sowing by Jul 12 to harvest before frost.

Begonias Water Budget

Plant needs
1.0″/week
Rainfall provides
0.4″/week
You supply
1.1″/week
Watering frequency 2-3 times/week
Season total 1,627 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 1.1" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 0.7" 0" ❄️ Dormant
Apr 4.3" 0.5" 3.8" 🚿 Regular watering
May 4.3" 0.3" 4" 🚿 Regular watering
Jun 4.3" 0.5" 3.8" 🚿 Regular watering
Jul 4.3" 2.6" 1.7" 💧 Light watering
Aug 4.3" 2.8" 1.5" 💧 Light watering
Sep 4.3" 2.2" 2.1" 💧 Light watering
Oct 4.3" 1.4" 2.9" 🚿 Regular watering
Nov 0.9" 0" ❄️ Dormant
Dec 0.9" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Mineral 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 ~2,000 GDD — county provides 4,125 GDD Excellent fit

Begonias Planting Timeline — Mineral County, NV

Begonias Planting Calendar

Activity When Date Range
Start Indoors February 17 Feb 17 – Mar 3
Transplant Outdoors April 28 Apr 28 – May 12
Bloom July 7 Jul 7 – Oct 27

· 8" apart · Rows 10" apart

Month-by-Month Timeline

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

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · 2-3 times/week

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

165 days in Mineral County

Growing Tips for Begonias in Mineral County

Direct sow Begonias outdoors after April 28 in Mineral County when soil has warmed and frost danger has passed.

Sandy soil in Mineral County dries quickly — mulch Begonias with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 100°F in Mineral County, provide afternoon shade for Begonias and water deeply in the morning.

Mineral County receives only 15" of rain annually. Begonias needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 Mineral County, NV?

Mineral County is in Zone 7a with an average last frost of April 28. Plan your Begonias planting based on this frost date — see the calendar above for exact timing.

What planting zone is Mineral County, NV?

Mineral County, Nevada is in USDA Hardiness Zone 7a. The average last spring frost is April 28 and first fall frost is October 10.

🌱

Your Mineral County Garden Planner — Free

A 22-page printable planner built for Mineral County (Zone 7a). 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 Mineral County, NV. 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.