No, should you water clematis daily has a clear no for ground planted vines. Deep weekly soaking beats daily light watering in every way. Daily water keeps the soil wet at the surface but dry below. The roots stay weak and the plant gets stressed in dry spells.
I used to water my vines every day for the first two years. The plants grew slow and wilted at the first hot dry week. I switched to one deep soak each week and the change was huge. Within one month, the roots had grown twice as deep into the soil.
How often to water clematis depends on rain, soil, and plant age. Most healthy ground vines need just 1 inch of water per week from rain or you. Clemson Extension lists this as the basic target for clematis care. New plants in their first year need more frequent checks until roots take hold.
Deep soaking pulls the roots down into the soil for long term strength. Roots grow where the water is, so deep water builds deep roots. Surface water builds weak surface roots that fry in summer heat. The same plant with deep roots can skip a week of water with no harm.
Watering clematis the right way takes just one big soak per week. Use a slow trickle from a hose at the base for 30 to 45 minutes. This lets the water sink 6 to 8 inches deep into the soil. The roots follow the water down and build a strong base.
Skip the spray nozzle that just wets the leaves and top inch of soil. Wet leaves invite mildew and fungal issues in humid weather. Aim the water at the soil, not the plant top.
Check the soil moisture before you water at all. Stick your finger 4 inches deep at the base of the vine. If the soil feels dry at that depth, time to water. If it feels cool and damp, wait two or three more days.
A long stick or wood dowel works too if you want to skip the dirt. Push it down 6 inches and pull it back out. Dry wood means dry soil and time to water. Damp wood means you can hold off for now.
Clematis water needs jump up in container culture though. Pot soil dries out 5 to 10 times faster than ground soil. A pot vine may need water every day in hot summer months. Check pot soil each morning during heat waves to stay ahead of stress.
Big pots hold more water and need fewer checks than small pots. A 20 inch pot can go 2 to 3 days between waterings in mild weather. Small pots under 12 inches may need water twice a day in heat.
Mulch is your best friend for stretching time between waterings. A 3 inch layer of bark, straw, or shredded leaves locks in soil moisture. The mulch also keeps roots cool and blocks weed growth at the base. Spread fresh mulch each spring after the first feed.
With mulch in place, ground vines may need water only every 10 to 14 days in mild weather. Bump that up to once a week in summer heat. Cut back to once every two weeks in cool fall months.
Read the full article: Clematis Vine Complete Care Guide