When to Plant Passion Fruit in St. Mary Parish, LA
Passion fruit is a tropical vine producing exotic, aromatic fruits with a tart, intensely flavored pulp full of edible seeds. The flowers are spectacularly ornamental.
St. Mary Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 5, giving you a growing season of approximately 294 days.
At an elevation of 252 feet, St. Mary Parish receives approximately 48.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Passion Fruit may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Passion Fruit will need more frequent watering and organic matter to retain nutrients.
St. Mary Parish Soil Profile
Soil Type
Sandy Loam
Soil pH
4.8-6.4
Drainage
Well Drained
Plant 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.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Passion Fruit Planting Timeline — St. Mary Parish, LA
Passion Fruit Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 28 | Feb 28 – Mar 14 |
· 72" apart · Rows 96" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Transplant Outdoors |
| March | Transplant Outdoors |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
365–545 days
Soil pH
6 – 7
USDA Zone
Zone 9a
Growing Season
294 days
Growing Tips for St. Mary Parish
Provide a strong trellis or fence. Fruits are ripe when they fall to the ground or the skin wrinkles. In marginal zones, grow in containers and protect from frost.
Companion Planting
Good Companions
Level Up Your Garden
Passion Fruit in Other Locations
Frequently Asked Questions
When should I plant Passion Fruit in St. Mary Parish, LA?
St. Mary Parish is in Zone 9a with an average last frost of February 14. Plan your Passion Fruit planting based on this frost date — see the calendar above for exact timing.
What planting zone is St. Mary Parish, LA?
St. Mary Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 5.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help St. Mary Parish gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.
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