March in the Garden: Adjusting After the Heat

ByMary Church
Soil

If this season has felt a little unpredictable, you’re not alone. Here in Southern California, we’ve had stretches of unexpected heat followed by cooler days that finally feel like early spring. For gardeners, that kind of swing can be confusing — and sometimes frustrating.

March is all about adjusting. Your garden is shifting, your plants are reacting, and now’s the time to step in and help everything stabilize before spring takes off.

The Impact of Early Heat

Those warm days we had recently may have pushed some plants ahead faster than expected.

You might notice:

  • Bolting lettuce or greens
  • Soil drying out more quickly than usual
  • Early pest activity (aphids, mites)
  • Seedlings growing too fast or becoming leggy

It’s normal. Plants respond quickly to temperature, and now that it’s cooling slightly, we need to rebalance.

What to Do Right Now

This is your reset moment.

  • Check soil moisture — don’t assume it’s still as dry as it was during the heat
  • Add mulch if you haven’t already to regulate temperature and retain moisture
  • Trim or harvest any plants that bolted early
  • Remove anything that is clearly struggling and make space for new growth

Think of this as fine-tuning, not starting over.

What to Plant in March

March is a transition month, so you can plant a mix of cool-season and early warm-season crops.

Still great to plant now:

  • Lettuce, arugula, spinach
  • Kale and Swiss chard
  • Carrots, radishes, beets
  • Peas
  • Cilantro and parsley

Starting to think about:

  • Tomatoes and peppers (start in greenhouse or protected areas)
  • Zucchini and cucumbers (toward late March into April)

Don’t rush the summer crops too early — a few cooler nights can still slow them down.

Watch for Pests Early

Warmer weather tends to wake pests up early too.

Keep an eye out for:

  • Aphids on tender new growth
  • Whiteflies
  • Spider mites in dry conditions

Catching them early is everything. A quick rinse with water or a simple treatment now can prevent a bigger problem later.

Keep Your Plot Active

As always at Las Flores, keeping your plot planted year-round is part of what keeps our garden thriving.

March is a great time to:

  • Fill any empty spaces
  • Refresh tired beds
  • Transition from winter crops into spring planting

Even a small amount of new planting keeps your soil healthy and your plot looking its best.

Final Thought

March isn’t about perfection — it’s about paying attention.

The weather shifts, the plants respond, and we adjust. That’s gardening. The more you stay engaged now, the smoother your transition into spring will be.

Take a walk through your plot, notice what’s working, and make a few small changes. That’s all it takes to keep things moving in the right direction.

Spring is right around the corner.

Similar Posts