Yes, you can use too much lime, and the result is worse than skipping it. My best vegetable bed turned on me one summer. The pepper and tomato leaves went pale yellow between the veins even though I fed them well. I checked the watering, the spacing, and the feeding schedule, and none of it had changed. Over-liming soil was the cause, and I had done it to myself that spring.
I had spread a heavy dose of lime without running a soil test first. My logic was simple and wrong. The bed had run a little sour the year before, so I figured more lime meant healthier plants. I pushed the pH well past 7.0 when most vegetables want it closer to 6.5. By midsummer I pulled a few of the worst plants and found pale roots and stunted growth. The plants paid for that one guess all season long.
Here is the mechanism that bit me. Lime raises soil pH, and pH controls which nutrients a plant can actually pull out of the ground. Once the pH climbs too far, metals like manganese and iron turn far less soluble and stay stuck in the soil. The roots cannot reach them. This micronutrient lockout starves the plant of the trace metals it needs to build green leaf tissue. That is why the new leaves yellowed between the veins while the older growth held on a while longer.
So high soil pH from too much lime can hurt a garden as much as never liming at all. The plant has plenty of food around it but no way to absorb part of it. You end up chasing a deficiency that no fertilizer fixes, because the real problem is the pH gate, not the supply on the shelf. I tried foliar feeds that year and they barely moved the needle, since the soil itself was the bottleneck.
Apply elemental sulfur at 1 to 2 pounds per 100 square feet to nudge pH back down, or work in generous peat moss. There is little point trying to push soil below its native pH, and either fix takes weeks to months to show.
Lowering an over-limed bed is slow work, so set your expectations early. Elemental sulfur is the main tool, but soil microbes have to convert it before the pH moves at all, which means you wait through warm soil weeks. Peat moss helps too and adds organic matter while it acidifies the bed. Both push you back toward your soil's natural range, yet neither one acts overnight. You apply it, you wait, and then you measure again before doing anything else.
The fix that matters most is the one you do first, and it costs almost nothing. Always test your soil before you spread any lime, and then follow the lab rate to the pound. That number is built for your exact soil and your target crop, not a generic guess. I always stick to the recommended amount now, never above it. Rounding up felt safer to me too once, and it cost me a whole bed of peppers.
Once you have limed, give the soil a full season and re-test before you touch it again. Lime keeps reacting for months after you spread it, so a fresh test tells you where the pH truly landed. Add more only when the new reading proves you need it. That single habit keeps over-liming soil from sneaking up on you. It also spares you a full year of pale, struggling plants that no amount of feeding will ever save.
Read the full article: Garden Lime: A Complete Soil-Test Guide
