Gardening-Season Backs and Knees

Manitoba's growing season is short and intense, so gardening tends to arrive in a rush. One weekend the beds are still frozen, and the next you have spent six hours bent over turning soil, planting, and hauling bags of mulch. It is no coincidence that clinics see a wave of sore backs and cranky knees every spring and summer. The good news is that gardening is not the problem — the pattern of how we do it usually is.

Gardening is real physical work

It is easy to underestimate gardening because it does not feel like exercise. But look at what the body is actually doing: sustained forward bending over garden beds, kneeling and squatting for long stretches, repetitive lifting and carrying of soil and containers, and twisting to reach and place plants. Individually none of these is harmful. Stacked together for hours, they add up to a genuine physical load — often more than the body has done in months.

Sustained flexion, where the spine stays bent forward for a long period, is a good example. The tissues of the low back tolerate this well in moderate doses, but comfort tends to fade as the position is held for a long time without a break. The knees face something similar in prolonged kneeling and deep squatting. The issue is rarely the position itself. It is the duration and the sudden jump in how much of it you are doing.

Why the "weekend spike" is the real culprit

Here is the key idea. When your back or knees complain after a big gardening day, the most likely reason is not that gardening is bad for you, or that you moved wrong. It is that you asked your body to do a large volume of work it had not been prepared for. The tissue was not conditioned for six hours of bending when the previous months involved almost none.

This mirrors what we see across sport and rehabilitation. Research on training loads consistently points to rapid spikes in workload — doing much more than the body is accustomed to, too quickly — as a key driver of overuse complaints, more so than the activity itself.¹ As the saying goes, there are no bad exercises, only too much too soon. Gardening is not the villain. The sudden Saturday marathon is.

That reframing matters, because it changes the response from "I should avoid this" to "I should pace this." Movement and loading are what build tissue tolerance over time; avoidance does the opposite. The same principle underlies our whole approach to musculoskeletal complaints, which we describe in our rehab-first overview.

How to pace a big gardening day

You do not need to garden less. You need to distribute the load more sensibly. A few habits make a large difference.

• Change positions often. The best position is usually the next one. Alternate between kneeling, standing, and sitting so no single tissue bears the load for too long. A kneeling pad and a small stool make this easy.
• Break the work into blocks. Instead of one uninterrupted marathon, work in stretches of twenty to thirty minutes, then stand up, walk, and move your spine and hips the other way for a minute.
• Warm up first. A few minutes of walking and some easy movement before you start gets the body ready, much as you would before any physical activity.
• Spread the volume across the week. Two shorter sessions are gentler on the body than one enormous one. If a big planting weekend is unavoidable, expect some soreness and plan an easier day after.
• Lift with the bigger joints. For bags of soil and heavy pots, get closer to the load, use your hips and legs, and avoid twisting while carrying. Make multiple lighter trips rather than a few heroic ones.
• Use your hips to bend. Hinging at the hips for reaching and weeding shares the work between the hips and back rather than loading the spine alone — a small nod to how the whole kinetic chain contributes to comfortable movement.

When soreness is normal, and when to pay attention

General muscle soreness a day or two after a big gardening session is expected and not a cause for worry. It reflects tissue that worked hard and is adapting, and it typically settles within a few days as you keep moving normally. Staying gently active tends to help it resolve faster than resting completely.

It is worth a closer look if pain is sharp rather than achy, if it lingers and builds rather than settling over several days, if it travels down a leg with numbness or tingling, or if a knee is swelling, locking, or giving way. Those patterns are a reason to check in with a clinician who can assess the area and the way you are loading it.

It is also worth remembering that a garden is one of the better forms of regular movement you can build into a summer. Consistent activity is protective for the low back, and the answer to gardening soreness is almost never to stop gardening.^2,3 It is to build up, pace the work, and let your body adapt to it — which, for a Manitoba summer, means you get to keep your hands in the soil right through to harvest.

References

1. Gabbett TJ. The training-injury prevention paradox: should athletes be training smarter and harder? Br J Sports Med. 2016;50(5):273-280.
2. Steffens D, Maher CG, Pereira LSM, et al. Prevention of low back pain: a systematic review and meta-analysis. JAMA Intern Med. 2016;176(2):199-208.
3. Foster NE, Anema JR, Cherkin D, et al. Prevention and treatment of low back pain: evidence, challenges, and promising directions. Lancet. 2018;391(10137):2368-2383.