When to plant Hostas in Moniteau County, MO
Moniteau County sits in cold Zone 6b. Plant Hostas April 16–April 30 for the single annual harvest; the October 27 first frost closes the window.
When to Plant Hostas in Moniteau County, MO
Your June gardening checklist
June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Moniteau County, Missouri.
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Sow hostas in trays indoors
Starting these indoors now means sturdy transplants ready the moment your soil warms up.
Get ahead of July
- First harvests: hostas
Hostas (Hosta spp.) are the undisputed kings of the shade garden, grown primarily for their spectacular mounded foliage in shades of deep green, blue-green, gold, and variegated combinations. Originating in East Asia (Japan, China, Korea), hostas form dense, long-lived clumps that reliably return year after year with minimal care. In summer, tall scapes of lavender or white tubular flowers rise above the foliage — some cultivars (notably H. plantaginea hybrids) are notably fragrant. Extremely adaptable in moist, well-drained soil with consistent shade to part shade.
Moniteau County, Missouri is in USDA Zone 6b. The average last spring frost is April 9 and the first fall frost is October 27, giving you a growing season of approximately 201 days.
At an elevation of 722 feet, Moniteau County receives approximately 40.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Hostas during the growing season.
Moniteau County Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-7
Drainage
Well Drained
Hostas Planting Risk Windows
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 Moniteau County
How your county's soil matches Hostas's growing requirements.
Soil pH
Your soil pH (5.6–7.0) overlaps with Hostas's range (6.0–7.5), though not a perfect match.
Soil Texture
The silt loam soil in Moniteau County is excellent for Hostas — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.7%). Annual compost additions will help Hostas.
How to Plant Hostas
Succession Planting Hostas
Sow every 6.9 weeks. Last sowing by Jul 29 to harvest before frost.
Hostas Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Hostas
Hostas needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Hostas Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.8" | 0" | ❄️ Dormant |
| Feb | — | 1.7" | 0" | ❄️ Dormant |
| Mar | — | 2.6" | 0" | ❄️ Dormant |
| Apr | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| May | 4.3" | 4.2" | 0.1" | 💧 Light watering |
| Jun | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Oct | 4.3" | 2.9" | 1.4" | 💧 Light watering |
| Nov | — | 2.7" | 0" | ❄️ Dormant |
| Dec | — | 2.5" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Moniteau County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Hostas 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.
Hostas Planting Timeline — Moniteau County, MO
Hostas Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 29 | Jan 29 – Feb 12 |
| Transplant Outdoors | April 16 | Apr 16 – Apr 30 |
| Bloom | July 2 | Jul 2 – Oct 22 |
Plant 1" deep · 24" apart · Rows 30" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors |
| March | — |
| April | Transplant Outdoors |
| May | — |
| June | — |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 6b
📆 Growing Season
201 days in Moniteau County
Growing Tips for Hostas in Moniteau County
Direct sow Hostas outdoors after April 09 in Moniteau County when soil has warmed and frost danger has passed.
General growing tips
Plant bare-root crowns or divisions in early spring just as new growth emerges, or in fall at least 6 weeks before hard freeze. Choose a site with morning sun and afternoon shade in Zones 6+; deeper shade is acceptable but reduces vigor and bloom. Keep consistently moist but never waterlogged. Apply a 2–3 inch mulch layer to conserve moisture and suppress weeds. Slugs are the primary pest — use iron phosphate bait if damage is significant. Deer will browse hostas heavily in most regions; protect with fencing or repellents. Divide every 3–5 years in spring to rejuvenate. Fall planting (Zones 4+) is equally effective as spring planting when soil stays workable. Year 2+ plants reach full size and flower most reliably; first-year divisions may produce limited flower spikes.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Hostas in Other Locations
Frequently Asked Questions
When should I plant Hostas in Moniteau County, MO?
Moniteau County is in Zone 6b with an average last frost of April 9. Plan your Hostas planting based on this frost date — see the calendar above for exact timing.
What planting zone is Moniteau County, MO?
Moniteau County, Missouri is in USDA Hardiness Zone 6b. The average last spring frost is April 9 and first fall frost is October 27.
When should I plant Hostas in Moniteau County, MO?
In Moniteau County, MO, plant Hostas after the last frost (around April 9) and before the first frost (around October 27). Best results when soil holds above 50°F.
What growing zone is Moniteau County, MO for Hostas?
Moniteau County sits in USDA Zone 6b. Hostas grows reliably in zones 3a through 9a, so it's a good fit here.
Can Hostas grow in Moniteau County's climate?
Yes — Hostas grows well in Moniteau County's temperate climate. Moniteau County averages a 201-day frost-free season, with last frost around April 9 and first frost around October 27.
Your Moniteau County Garden Planner — Free
A 22-page printable planner built for Moniteau 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.