When to Plant Dill
Planting Window
- Direct sow
- Around last frost date, once soil is workable
| USDA Zone | Typical Window |
|---|---|
| Zone 5 and colder | April, with several successive sowings |
| Zone 6-7 | March |
| Zone 8 and south | Fall through spring only |
Dill is genuinely frost-tolerant and, because its taproot resents disturbance, it's almost always direct-sown rather than started indoors - both traits push its planting approach toward early, repeated small sowings rather than the single indoor-start-then-transplant pattern common tender herbs like basil follow.
Direct Sowing, Early
Dill germinates and grows well in cool soil that basil and other tender herbs simply can't handle yet, which is the whole reason its sowing window opens so much earlier in the spring than theirs does.
Succession Sowing Every Two to Three Weeks
A dill planting stays useful for leaf harvest for only a few weeks before it bolts to flower, so staggering several small sowings roughly two to three weeks apart through the cool season is close to essential here, more so than for most other herbs on this site.
Fall Sowing Is a Real Option in Milder Climates
In zones with a genuinely mild fall, a late-summer sowing of dill can produce a usable fall crop before winter, similar in logic to fall spinach or fall arugula - cooling temperatures and shortening days work against bolting rather than pushing toward it, often producing a longer-lasting harvest than an equivalent spring sowing.
Planting for Seed Harvest Runs on a Different Clock
Gardeners specifically growing dill for seed (for pickling) rather than leaf let a planting go all the way through flowering to seed set, which takes considerably longer than a leaf-focused harvest cycle - timing a planting to have mature seed heads ready right around pickling season is worth planning deliberately if that's the goal, rather than treating every planting the same way.
Flowering Dill Can Stunt Nearby Tomatoes
Dill is sometimes planted near tomatoes for pest-attracting beneficial insects while young, but a dill plant left to mature and flower can measurably stunt nearby tomato growth - timing matters here as much as placement, and many gardeners harvest or remove flowering dill promptly specifically to avoid this later-season conflict.
Zone boundaries follow the USDA Plant Hardiness Zone Map (2023 revision); frost windows reflect NOAA/NCEI climate normals. Both are typical historical ranges, reviewed annually - not a forecast or a guarantee for any single year. See Methodology & Sources.
Frequently Asked Questions
My dill bolted before I got a chance to use much of the leaf - is it wasted for pickling now?
Not at all, and it may actually be closer to ready for that use than it was as leaf - many pickling recipes specifically call for dill heads, the flat flower umbels that form once a plant bolts, rather than the leafy fronds. A bolted planting you'd otherwise consider a loss is often exactly the stage a pickle recipe wants; just harvest the heads while they're still fresh and green rather than letting them dry fully to seed if a recipe calls for heads specifically.
Does dill go in the ground at the same time as peas, given both are described as very early plantings?
Close, but dill is timed slightly later in most guidance - peas are typically sown as much as four to six weeks ahead of last frost, while dill's early window is usually described as being right around the last frost date itself, once soil is reliably workable. Both are genuinely early compared to warm-season crops, but if you're staggering an early-spring planting list, peas are usually the first thing in the ground, dill following not far behind.
Can I just let dill self-seed instead of resowing it every few weeks?
To some degree - dill drops seed readily once a few plants are allowed to flower, and many gardeners let this happen on purpose as a low-effort way to get volunteer seedlings the following spring. Volunteers show up on their own timeline rather than a planned succession date, though, so treat self-seeding as a supplement to deliberate sowing rather than a substitute for it if you want a genuinely continuous harvest.