Best Tropical Plants to Grow in Kentucky
Kentucky sits in USDA Hardiness Zone 6. These 4 tropical varieties are suited to Kentucky's 180-day growing season with last frost around April 15 and first frost around October 15.
Varieties
4
for Kentucky
USDA Zone
6
180-day season
Beginner
2
easy to grow
Heirloom
1
heritage varieties
Kentucky in USDA Zone 6
Kentucky is primarily in Zone 6. Varieties that thrive in this zone will typically grow well across the state, though local microclimates vary.
When to Plant Tropical Plants in Kentucky
Growing Tropical Plants in Kentucky
Zone 6 presents a fascinating opportunity for tropical gardening, despite its challenging frost dates. With an average last frost around April 15 and first frost by October 15, you get roughly 180 frost-free days—just enough to coax fruit from many tropical varieties if you choose wisely. The key is selecting plants that can handle cooler soil temperatures and make the most of your limited season. Zone 6 gardeners have a real advantage in summer heat, often reaching temperatures that rival tropical regions, but the shortened season means focusing on fast-maturing varieties and early-ripening cultivars. Many tropical plants that struggle in cooler zones can actually thrive here with proper timing and variety selection. The secret lies in understanding which varieties can handle the temperature swings and shorter photoperiod while still delivering the exotic flavors and stunning ornamental value you're after.
Variety Comparison
| Variety ↑ | Days | Difficulty |
|---|---|---|
| Big Bertha Bell Pepper | 75-80 | Easy |
| Black Pearl Ornamental Pepper | 70-80 | Easy |
| Fish Pepper | 70-80 | Easy to moderate |
| Ice Cream Bean | 90 | Easy to moderate |
Variety Details
Big Bertha Bell Pepper
A massive sweet bell pepper that produces enormous 7-inch long fruits weighing up to 10 ounces each. This reliable hybrid delivers exceptional yields of thick-walled, sweet peppers that are perfect for stuffing or fresh eating. Big Bertha's impressive size and consistent performance make it a favorite among gardeners who want to grow show-stopping peppers.
Black Pearl Ornamental Pepper
A stunning ornamental pepper that doubles as an edible variety, featuring jet-black foliage, purple flowers, and small round peppers that ripen from black to red. This compact plant creates a dramatic focal point in containers or garden beds while producing fiery hot peppers perfect for hot sauce making. Winner of the All-America Selections award for its exceptional ornamental value and garden performance.
Fish Pepper
Initial color is lime green, turning to golden yellow when ripe. Excellent, sweet flavor. Medium-large fruits are mostly 3-lobed and slightly elongated.
Ice Cream Bean
Large 2" blossoms in bright, clear colors of red, purple, mauve, pink, blue, and white. Blooms over a long period with exceptional fragrance. Can be spelled either as sweet pea or sweetpea. Attracts hummingbirds.
Zone 6 Growing Tips for Kentucky
Start your tropical seeds indoors 6-8 weeks before your last frost date—aim for early March for most varieties. This gives plants like tomatoes, peppers, and herbs a crucial head start before transplanting after May 1st when soil temperatures stabilize above 60°F. For heat-loving crops like habaneros and ornamental peppers, wait until late May when nighttime temperatures consistently stay above 55°F. Container growing is your best friend in Zone 6, allowing you to move tender plants like dwarf fruit trees and banana plants to protected areas or indoors when temperatures drop. Use black plastic mulch or row covers to extend your season—you can often push harvest dates into November with proper protection. The biggest challenge you'll face is getting enough accumulated heat units for long-season crops like mangoes and avocados, so focus on dwarf varieties and consider supplemental heating in shoulder seasons.