If you grew anything last year, your garden beds have been through it. Months of watering, root growth, and decomposition have changed what's in those beds — even if they look fine from the top.
Most people skip straight to planting in spring. That's a mistake. Thirty minutes of bed prep now means the difference between a garden that produces all season and one that stalls out by May.
What Winter Did to Your Soil
Here's what's actually going on in a raised bed that grew food last year:
- Soil level dropped 2-4 inches. Organic matter breaks down over time. Your beds are literally shorter than when you filled them.
- Nutrients are depleted. Last season's plants pulled nitrogen, phosphorus, and potassium. Heavy feeders like tomatoes and peppers pulled a lot.
- Soil is compacted. Months of watering compressed the soil structure. Roots need loose soil to spread — compacted beds mean stunted plants.
- Old roots are still in there. Unless you pulled every root ball, there's dead root material decomposing in your beds. That's fine (it adds organic matter), but it temporarily ties up nitrogen as it breaks down.
The Spring Refresh Checklist
Here's what to actually do, in order:
1. Pull out old plants and debris
Remove any dead stalks, dried-up plants, or mulch from last season. If you had diseased plants (powdery mildew, blight), get that material out of the bed completely — don't compost it in place.
2. Loosen the soil
Use a garden fork or broadfork to loosen the top 8-12 inches. Don't flip the soil — just break up the compaction. You want to preserve the soil biology that's already established.
3. Top off with fresh compost
Add 2-3 inches of quality compost on top. This replaces the volume you lost, adds back nutrients, and improves drainage. For raised beds, a 70/30 mix of compost to existing soil works well for the top layer.
4. Amend for what you're planting
If you're planting heavy feeders (tomatoes, peppers, squash), work in a balanced organic fertilizer. Something with an NPK around 4-4-4 or 5-5-5 is fine. For root crops (carrots, beets, radishes), go lighter on nitrogen — too much makes leafy tops and skinny roots.
5. Water deeply, then wait
Soak the beds thoroughly and let them sit for 2-3 days before planting. This lets the compost and amendments integrate and gives the soil biology time to activate.
How Much Work Is This, Really?
For a single 4x8 raised bed, the full refresh takes about 30-45 minutes plus the cost of a few bags of compost and fertilizer. If you have 3-5 beds, you're looking at a half-day project.
The compost alone will run $30-50 per bed depending on what you buy. Amendments add another $10-20. So figure $40-70 per bed in materials, plus your Saturday morning.
For a full backyard with 4+ beds, plus irrigation checks, replanting, and mulching? That's a full weekend project, honestly.
What to Plant After the Refresh
Once your beds are refreshed, you're in great shape for spring planting. In San Diego (Zone 10a), March is prime time for:
- Warm-season: Tomatoes, peppers, cucumbers, zucchini, eggplant
- Herbs: Basil, cilantro, dill, parsley
- Quick wins: Lettuce and radishes (30-45 days to harvest)
Check the full San Diego planting guide for complete timing and spacing info.
Skip the Weekend Project
If this sounds like more than you want to take on — or if you'd rather spend your weekend enjoying the garden instead of rebuilding it — that's exactly what HarvestLoop does.
We handle the full spring refresh: soil amendment, bed repair, replanting, irrigation check, and mulching. Your beds go from winter-tired to spring-ready in a single visit. No trips to the nursery, no hauling bags of compost, no guessing what to plant where.
We serve San Diego — North County, East County, and Coastal. If you're in the area and your beds need work, reach out and we'll get you set up before peak growing season hits.