What's in Season in January?

Peak citrus season meets hearty winter greens — bright flavors and immune-supporting nutrients for the coldest month.

January is the heart of US citrus season. Navel oranges from California and grapefruit from Texas and Florida are at their sweetest and cheapest right now, making them an easy daily source of vitamin C during cold-and-flu season. A navel orange is a satisfying low-calorie snack — about 47 kcal per 100g with 2g of fiber — and Meyer lemons, a winter specialty, brighten everything from roasted vegetables to dressings.

On the vegetable side, cold weather works in your favor: frost converts starches to sugars in kale, Brussels sprouts, and cabbage, so winter brassicas taste sweeter now than at any other time of year. Storage crops like sweet potatoes and carrots remain excellent, and they help fill the vitamin A and potassium gaps common in winter diets built around comfort food.

January Seasonal Produce at a Glance

Produce	Peak Season	Nutrition & Buying Notes
Navel oranges	Dec–Mar	About 47 kcal per 100g with 2g fiber; the classic winter citrus for daily vitamin C
Grapefruit	Jan–Apr	Texas and Florida crops peak in winter; tart, hydrating, and rich in vitamin C
Kale	Oct–Mar	Frost sweetens the leaves; delivers 254mg of calcium per 100g plus vitamins A and K
Brussels sprouts	Sep–Feb	About 4.8g fiber and 4g protein per 100g; roast until caramelized
Sweet potatoes	Oct–Feb	Storage crop at its best; beta-carotene rich with about 486mg potassium per 100g
Green cabbage	Nov–Mar	Inexpensive winter staple; good source of vitamin C and fiber for slaws and soups
Carrots	Year-round (winter storage)	Winter carrots are extra sweet; loaded with beta-carotene for vitamin A
Meyer lemons	Dec–Feb	Sweeter and more floral than regular lemons; use juice and zest to cut back on salt

Nutrients to Focus on in January

Vitamin C — Peak citrus season lines up with peak cold season — support immune function daily
Vitamin D — Short days and indoor time mean low sun exposure; look to fatty fish and mushrooms
Dietary Fiber — Brassicas and root vegetables help reset digestion after the holidays

Simple Recipe Ideas for January

Winter citrus and kale salad

Ingredients

・1 bunch kale, ribs removed
・1 navel orange, segmented
・1/2 grapefruit, segmented
・Olive oil and lemon vinaigrette
・Toasted almonds

Nutrition note: Massaging kale with the vinaigrette softens it and mellows bitterness. Vitamin C from the citrus also helps your body absorb the non-heme iron in the greens.

Sheet-pan Brussels sprouts and sweet potatoes

Ingredients

・1 lb Brussels sprouts, halved
・2 sweet potatoes, cubed
・2 tbsp olive oil
・Salt, pepper, smoked paprika
・Maple drizzle (optional)

Nutrition note: One pan covers fiber, potassium, and beta-carotene. Roast at 425°F until the edges brown — caramelization brings out the frost-sweetened flavor.

Top Foods for January's Key Nutrients (Live Data)

Foods from USDA FoodData Central ranked by the nutrients worth focusing on in January, per 100g.

Foods highest in Vitamin C

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1. Kale - NFY1214SU477mg
2. Kale - NFY1212EX422mg
3. Kale, frozen, cooked, boiled, drained, without salt418mg
4. Kale - NFY1214RH410mg
5. Kale, raw390mg
6. Kale - NFY1212E0378mg

Foods highest in Vitamin D

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Foods highest in Dietary Fiber

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