Sweet peas require consistent moisture, especially during germination, establishment, and flowering. Water deeply when the top few centimeters of soil feel dry, avoiding waterlogging.

In hot, dry weather, daily watering may be necessary to prevent stress and ensure continuous blooming. Mulching can help retain soil moisture.

Regular deadheading is essential for sweet peas to ensure a continuous display of flowers throughout the season.

Snip off spent blooms just above a leaf or side shoot to prevent seed formation, which signals the plant to stop flowering.

Pinching out the growing tips when plants are about 15-20 cm tall encourages bushier growth and more flowering stems. Remove any yellowing or damaged foliage to maintain plant health.

Sweet peas are most commonly propagated from seeds. For best results, sow seeds indoors 4-6 weeks before the last expected frost, or directly outdoors once the soil has warmed and all danger of frost has passed.

To improve germination, nick the hard seed coat with a file or soak seeds in warm water for 24 hours prior to planting. Plant seeds about 2. 5 cm deep and 10-15 cm apart.

As annual plants, sweet peas are not typically repotted. They are usually grown from seed directly in their final location, whether that's a garden bed or a large container.

If starting seeds indoors, transplant seedlings carefully into their permanent outdoor spot once they have developed a few true leaves and the weather conditions are suitable.

Choose a container with good drainage and sufficient depth for root development.