Spring Watering and Mulching Before It Gets Hot

April in Redmond is a weird month to think about watering. It rained sideways last Tuesday. The forecast has a cloud emoji for the next nine days. And yet, every single year I wait too long to get my watering schedule and mulching sorted out, and then suddenly it’s warm and dry and my lettuce is looking at me like I failed it personally.

So this year I’m getting ahead of it. If you’re in the PNW, now is exactly the right time to think about this stuff. Before you actually need it.

Why the Timing Actually Matters

Here’s the thing about our springs. We go from soaking wet to bone dry faster than you’d expect. One week you’re wondering if your raised beds will float away, and three weeks later the top inch of soil is cracked and your transplants are wilting by noon. The transition sneaks up on you every single time. Ask me how I know. (Spoiler: my tomatoes from 2021. RIP.)

Getting mulch down before the heat arrives is the move. Once the soil is already hot and dry, you’re playing catch-up. Mulch laid down while the soil is still cool and moist locks that moisture in. Which, now that I think about it, is doing the watering work before you even turn on the hose.

The Cheapest Mulch That Actually Works

I’m not buying bags of decorative bark mulch at the garden center. By now you should know better than that from me. My go-to spring mulch is grass clippings. Free, already in the yard, done. Lay them down about two inches thick around your beds. They break down fast and feed the soil as they go.

Straw is the other one I use, especially around tomatoes and peppers. Not hay. Hay has seeds, and I learned that one the hard way. Actual straw. A bale from a farm supply store or feed store usually runs cheap and covers a lot of ground. Way better value than the bagged stuff at McLendon’s or wherever you’re shopping.

Shredded leaves from last fall work great too if you’ve got a pile sitting around. My daughters helped me bag up a ridiculous amount of maple leaves last October and I told them we were “saving them for the garden.” They thought I was weird. They’re not wrong. But I’ve got free mulch, so.

Whatever you use, keep it a few inches away from the base of your plants. Mulch piled against the stem is just rot waiting to happen.

Setting Up a Spring Watering Schedule

In April, I’m usually not watering much at all yet. The rain handles it. But I do check the soil every few days, especially in raised beds, because they drain faster than in-ground. Stick your finger about two inches down. If it’s dry at that depth, water. If it’s still damp, leave it alone.

Once we hit May and the rain gets more sporadic, I shift to a real schedule. For most vegetables, a deep watering two to three times a week beats a light daily sprinkle every time. Deep watering means slow and long, not a quick blast. You want it soaking down to the roots, not just wetting the surface.

If you’re hand watering like me, a watering wand is worth a few bucks. Much easier to get water to the base of the plant instead of soaking the leaves, which invites fungal problems. Wet leaves at night are basically a slug and mildew welcome mat.

Morning is the best time to water. I know that’s not always practical, but if you can swing it, watering in the morning means the foliage dries out during the day. Watering at night is fine in a pinch. Watering in the heat of the afternoon is mostly just watering the air. I’ve done it plenty of times. You lose a lot to evaporation and don’t do the plants any favors.

Mulch + Watering Together, Not Separately

These two things are more connected than they seem. A well-mulched bed holds moisture so well that your watering frequency drops noticeably. I’d estimate I water mulched beds maybe half as often as unmulched ones in July. That’s not nothing if you’re hauling a hose around or watching your water bill go up.

Get the mulch down first, then water. The mulch holds whatever you put in there. And honestly, if you water first then mulch, you’re fine too. I’m not sure why I wrote that like there was a wrong answer. There isn’t. Just do both.

The goal coming out of April into May is simple: keep the soil consistently moist. Not soggy, not bone dry. Vegetables are not that dramatic about water as long as it’s steady. It’s the feast-and-famine cycle that stresses them out, and a stressed vegetable is not a productive vegetable. Consistent moisture, good mulch, morning watering when you can manage it.

That’s it. You’re basically set for summer. Well, you’re set for watering in summer. The slugs are a whole other conversation.

Photo by Zack Yeo on Unsplash