When to Plant Dianthus in Hardin County, TX
China pinks (Dianthus chinensis) are a reliable cool-season annual offering fringed blooms with a spicy-sweet clove fragrance. They perform best in the cool temperatures of spring and fall, providing vivid color in beds and borders when summer annuals haven't kicked in yet. In warmer zones they are grown as fall–winter–spring annuals. The compact mounding habit and clean foliage make them excellent edging and container plants.
Hardin County, Texas is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 4, giving you a growing season of approximately 293 days.
At an elevation of 323 feet, Hardin County receives approximately 66.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 90°F, providing good warmth for Dianthus during the growing season. Sandy soil warms quickly in spring — great for early planting — but Dianthus will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Dianthus root diseases.
Hardin County Soil Profile
Soil Type
Sandy Loam
Soil pH
5.3-6.7
Drainage
Well Drained
Monthly Watering Guide for Dianthus
Dianthus needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Dianthus Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.5" | 0" | ❄️ Dormant |
| Feb | 4.3" | 2" | 2.3" | 🚿 Regular watering |
| Mar | 4.3" | 3.7" | 0.6" | 💧 Light watering |
| Apr | 4.3" | 7.7" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 10.4" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 11.2" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 9.5" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 7.2" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 5.6" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Nov | 4.3" | 1.9" | 2.4" | 🚿 Regular watering |
| Dec | 4.3" | 1.6" | 2.7" | 🚿 Regular watering |
Water needs are for active growing months only (Feb–Dec in Hardin County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Dianthus Planting Timeline — Hardin County, TX
Dianthus Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | December 20 | Dec 20 – Jan 3 |
| Transplant Outdoors | December 20 | Dec 20 – Jan 3 |
| Direct Sow | December 20 | Dec 20 – Jan 10 |
| Bloom | February 7 | Feb 7 – Apr 11 |
Plant 0.1" deep · 8" apart · Rows 10" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Transplant Outdoors Direct Sow |
| February | Bloom |
| March | Bloom |
| April | Bloom |
| May | — |
| June | — |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | Start Indoors Transplant Outdoors Direct Sow |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
60–80 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 9a
📆 Growing Season
293 days in Hardin County
Growing Tips for Hardin County
Start seeds indoors 8–10 weeks before last frost for spring transplants, or direct-sow in early spring as soon as soil can be worked — seeds tolerate light frost. Can also be direct-sown in late summer for fall bloom. Plant in full sun with excellent drainage; poorly drained soil causes crown rot. Deadhead regularly to extend bloom. In zones 8–10, plant as a fall annual for winter– spring color; plants decline in summer heat.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Dianthus in Other Locations
Frequently Asked Questions
When should I plant Dianthus in Hardin County, TX?
Hardin County is in Zone 9a with an average last frost of February 14. Plan your Dianthus planting based on this frost date — see the calendar above for exact timing.
What planting zone is Hardin County, TX?
Hardin County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 4.
Your Hardin County Garden Planner — Free
A 22-page printable planner built for Hardin County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.