Best Tropical Plants to Grow in New Brunswick
New Brunswick sits in USDA Hardiness Zone 5. These 4 tropical varieties are suited to New Brunswick's 155-day growing season with last frost around April 30 and first frost around October 5.
Varieties
4
for New Brunswick
USDA Zone
5
155-day season
Beginner
2
easy to grow
Heirloom
1
heritage varieties
New Brunswick in USDA Zone 5
New Brunswick is primarily in Zone 5. Varieties that thrive in this zone will typically grow well across the state, though local microclimates vary.
When to Plant Tropical Plants in New Brunswick
Growing Tropical Plants in New Brunswick
Zone 5 presents unique opportunities for tropical gardening despite its challenging frost dates. With an average last frost of April 30th and first frost on October 5th, you're working with approximately 155 frost-free days—enough time for many tropical varieties if you choose wisely and plan strategically. The key is selecting fast-maturing varieties and heat-lovers that can make the most of your intense summer heat while tolerating cooler nighttime temperatures that can dip into the 50s even in summer.
Success in Zone 5 tropical gardening comes down to variety selection and timing. Look for determinate tomatoes like Early Girl that mature quickly, compact fruit trees that can be containerized and moved indoors, and herbs like Thai Basil that thrive in shorter seasons. Many tropical plants that struggle in cooler zones like 3-4 actually perform well here because you get sufficient heat units during peak summer months. The challenge isn't just cold—it's maximizing your growing window and having backup plans for unexpected late or early frosts.
Our carefully curated selection focuses on varieties that have proven successful in Zone 5 conditions. From quick-producing peppers like Caribbean Red Habanero to container-friendly fruit trees like Dwarf Cavendish Banana, these plants can deliver tropical flavors and exotic beauty even with your shorter growing season. Many can be grown in containers and brought indoors, extending your tropical garden year-round.
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 5 Growing Tips for New Brunswick
Start your tropical seeds indoors 6-8 weeks before your last frost date, typically in mid to late March for Zone 5. This gives plants like tomatoes, peppers, and herbs a strong head start before transplanting outdoors after May 15th—waiting two weeks past average last frost protects against surprise late freezes that can devastate tropical plants. Use heat mats and grow lights indoors, as most tropical varieties need soil temperatures above 65°F to germinate properly, which is difficult to achieve naturally in Zone 5 during early spring.
Container growing is your secret weapon in Zone 5. Plant dwarf fruit trees, bananas, and sensitive tropicals in large pots that can be moved to protected locations during temperature swings. Position containers against south-facing walls or in courtyards that collect and radiate heat. For in-ground planting, use row covers, Wall O' Water season extenders, or cold frames to add 2-4 weeks to both ends of your growing season. Black plastic mulch warms soil faster in spring and retains heat longer in fall.
Plan for season extension from day one. Install infrastructure like hoop houses or have frost blankets ready by late September. Many tropical plants like peppers and herbs can continue producing well into November with minimal protection. Watch nighttime temperatures closely—when they consistently drop below 50°F, it's time to harvest remaining fruit and either bring containers indoors or take cuttings from plants you want to overwinter.