Kohlrabi, often called the “German turnip,” is a versatile and nutrient-packed vegetable that thrives in a variety of climates. Knowing when kohlrabi is ready to pick ensures optimal taste and texture.

Below, we’ll explore the ten best ways to determine its readiness, covering different seasons and planting zones, including states like Texas, Arizona, Florida, Missouri, Georgia, and California.

How Can You Tell When Kohlrabi Is Ready To Pick

1. Size of the Bulb

Kohlrabi bulbs are typically ready to pick when they reach about 2 to 3 inches in diameter. In spring planting, the growth can be faster due to mild temperatures, making it essential to keep a close watch. Overgrown bulbs tend to become woody and lose their tenderness.

In regions with warmer climates like Florida and Arizona, where spring transitions quickly into hotter months, harvesting at the right size prevents toughness. Conversely, in cooler zones such as USDA Zones 5 and 6, kohlrabi can grow slightly larger before losing quality.

2. Color of the Bulb

The color of kohlrabi is an important indicator of readiness. Varieties like purple kohlrabi should display a deep, vibrant hue, while green varieties should have a bright, fresh look. In summer planting, strong sunlight can intensify the colors, making them more pronounced.

In states like Texas and Georgia, where the sun can be intense, the color development is quicker. In contrast, cooler areas such as Missouri allow for a slower maturation process, which can enhance flavor.

3. Texture of the Skin

The skin of kohlrabi should be smooth and free from cracks. A rough or cracked surface often indicates that the bulb has been left in the ground too long. Spring and fall crops tend to have smoother skins due to stable weather conditions.

In USDA Zones 9 and 10, where states like California and Arizona are located, sudden temperature spikes can lead to skin cracking. Harvesting before this happens ensures a better-quality vegetable.

4. Leaf Health

Healthy leaves are a good sign that kohlrabi is ready to pick. The leaves should be green and firm, without yellowing or wilting. In fall planting, leaves tend to stay healthier longer due to cooler temperatures.

In warm states like Florida and Texas, maintaining leaf health can be challenging due to heat stress. In cooler zones, such as USDA Zone 6, leaves remain vibrant longer, providing a visual cue for harvest readiness.

5. Planting Season Influence

Kohlrabi planted in spring typically matures in 45 to 60 days, while fall crops may take slightly longer. The season affects not only the growth rate but also the flavor, with fall kohlrabi often being sweeter.

In USDA Zones 7 and 8, including states like Missouri and Georgia, both spring and fall crops thrive. In hotter zones, such as USDA Zone 10, focusing on early spring planting is crucial to avoid the intense summer heat.

6. Stem Thickness

The thickness of the stem just above the bulb is another indicator of readiness. A thick, sturdy stem suggests the plant is mature and ready for harvest. In summer planting, stems can thicken quickly due to rapid growth.

In states like Texas and Arizona, rapid growth can lead to overly thick stems if not monitored. In contrast, cooler zones such as USDA Zone 5 allow for more gradual development.

7. Taste Test A simple taste test can confirm readiness. A small slice should be crisp and mildly sweet, without any woody texture. Spring and fall kohlrabi are usually sweeter, while summer crops may develop a slightly spicier flavor.

In states like California and Florida, where multiple planting seasons are possible, taste testing ensures the best harvest timing. Cooler zones often yield naturally sweeter kohlrabi.

8. Days to Maturity

Kohlrabi varieties have specific days to maturity listed on seed packets, typically ranging from 45 to 70 days. Tracking the days helps ensure timely harvest. Spring crops generally mature faster due to favorable conditions.

In USDA Zones 9 and 10, such as in Arizona and California, sticking to the recommended timeline is critical to avoid heat stress. Cooler zones allow for a bit more flexibility.

9. Bulb Firmness

A firm bulb is a sign of readiness. Soft or spongy bulbs indicate overripeness or poor growing conditions. In spring planting, bulbs are often firmer due to steady growth rates.

In states like Texas and Georgia, where temperature fluctuations can affect firmness, regular checks are necessary. Cooler zones typically yield firmer bulbs due to slower, steadier growth.

10. Weather Considerations

Weather plays a crucial role in determining when kohlrabi is ready to pick. Stable temperatures in spring and fall lead to better-quality harvests. Summer crops may face challenges such as heat stress.

In states like Missouri and California, monitoring weather patterns ensures a successful harvest. Cooler zones provide more predictable conditions, making it easier to determine readiness.

How Can You Tell When Kohlrabi Is Ready To Pick  FAQs

1. What is the best season to harvest kohlrabi? The best seasons are spring and fall when temperatures are cooler, leading to better flavor and texture.

2. Can kohlrabi be grown in hot climates? Yes, but it’s best to plant in early spring or fall in hot states like Texas, Arizona, and Florida.

3. How long does kohlrabi take to mature? Kohlrabi typically matures in 45 to 70 days, depending on the variety and growing conditions.

4. What USDA planting zones are ideal for kohlrabi? Kohlrabi grows well in USDA Zones 3 through 10, with specific planting times varying by zone.

5. How do I know if kohlrabi is overripe? Overripe kohlrabi often has a woody texture, cracks on the skin, and a spongy feel.

6. Can I eat kohlrabi leaves? Yes, the leaves are edible and can be used similarly to kale or collard greens.

7. How should I store freshly picked kohlrabi? Store kohlrabi in the refrigerator, preferably in a plastic bag, to maintain freshness for up to two weeks.

Conclusion

Knowing when to pick kohlrabi ensures a delicious and nutritious addition to your meals. By monitoring size, color, texture, and other factors, you can enjoy the best this versatile vegetable has to offer.

Whether you’re in Texas, Florida, Missouri, or beyond, following these guidelines will lead to a successful harvest. Start growing your own kohlrabi today and experience the joy of fresh, homegrown produce!