When to Plant Alliums in Crosby County, TX
Ornamental alliums (Allium spp.) bridge the gap between spring and summer with their striking globe-shaped flower heads in shades of purple, violet, white, and pink. Blooming after tulips have faded, they extend the spring display well into early summer. 'Gladiator', 'Globemaster', and 'Purple Sensation' produce softball-sized heads on 18–36 inch stems, while smaller species create charming accents at border fronts. Deer and rodents shun them completely due to the characteristic onion scent. Dried seed heads provide architectural interest into fall.
Crosby County, Texas is in USDA Zone 7b. The average last spring frost is April 6 and the first fall frost is November 2, giving you a growing season of approximately 210 days.
At an elevation of 1,966 feet, Crosby County receives approximately 58.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Alliums may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Alliums will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Alliums root diseases.
Crosby County Soil Profile
Soil Type
Sandy Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Alliums Planting Timeline — Crosby County, TX
Alliums Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Bloom | October 26 | Oct 26 – Nov 16 |
| Fall Sowing | September 28 | Sep 28 – Oct 12 |
Plant 5" deep · 7" apart · Rows 8" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing Bloom |
| November | Bloom |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
28–42 days
🧪 Soil pH
Needs 5.5–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 7b
📆 Growing Season
210 days in Crosby County
Growing Tips for Crosby County
Plant bulbs in fall, 3–4 times as deep as the bulb diameter (typically 4–6 inches for large types, 3 inches for small species). Space 6–8 inches apart for standard cultivars. Foliage often looks untidy as it dies back before bloom — plant around perennials that will conceal the yellowing leaves. Excellent drainage is essential; alliums rot in wet soils. Leave bulbs in place for naturalization; divide every 3–4 years when clusters become congested. Deadhead spent globes or leave for ornamental seedheads and self-sowing.
Companion Planting
Good Companions
Avoid Planting Near
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Alliums in Other Locations
Frequently Asked Questions
When should I plant Alliums in Crosby County, TX?
Crosby County is in Zone 7b with an average last frost of April 6. Plan your Alliums planting based on this frost date — see the calendar above for exact timing.
What planting zone is Crosby County, TX?
Crosby County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is April 6 and first fall frost is November 2.
Your Crosby County Garden Planner — Free
A 22-page printable planner built for Crosby County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.