As the end of winter approaches and warmer weather nears, it’s time to start thinking ahead about moving your houseplants outside. With the right preparation, you can help your plants thrive in the fresh air, sunlight, and humidity of the outdoors.
Here’s everything you need to know to set them up for success:
Timing Is Everything
While it’s tempting to let your plants bask in the first warm days of spring, it’s crucial to wait until the risk of frost has passed. Cold temperatures, especially frost, can damage or kill many tropical and subtropical plants that were happily growing indoors. The ideal time to move houseplants outdoors is when the nighttime temperatures consistently stay above 50°F, and daytime temperatures range between 60°F to 85°F. For those living in areas with unpredictable spring weather, consider waiting until at least a few weeks after the last frost date.
Gradual Acclimatization (Hardening Off)
Plants that have spent the winter indoors are not accustomed to the harsher elements of outdoor environments. The sudden exposure to full sunlight, wind, and fluctuating temperatures can shock your plants, potentially causing them to wilt, burn, or go into shock. To prevent this, give them time to adjust by hardening them off.
Here’s how to do it:
- Start by placing your plants outside in a shady, sheltered spot for a few hours each day.
- Gradually increase their exposure to sunlight and outdoor conditions over the course of 7-10 days.
- After a week or so, your plants will have acclimatized to the outdoors, making them more resilient to direct sunlight, wind, and temperature changes.
Check for Pests
Before bringing your houseplants outside, thoroughly inspect them for any signs of pests. Insects and disease can thrive indoors without detection, and the transition outside can help them spread or worsen. Look for common pests like spider mites, aphids, mealybugs, and scale insects.
If you spot any unwanted critters, treat your plants with a safe, natural pesticide such as neem oil or insecticidal soap. Also, be sure to check the undersides of leaves and stems where pests often hide.
Choose the Right Spot for Each Plant
Not all plants are created equal when it comes to sunlight preferences. Before placing your houseplants outside, consider the following:
- Full Sun: Some plants, such as succulents, cacti, and many herbs, love full sun. These plants should be placed in a spot that receives at least 6 hours of direct sunlight daily.
- Partial Sun/Partial Shade: Tropical houseplants, like pothos, peace lilies, and calatheas, may prefer more filtered light and will do best in spots where they get dappled sunlight or morning sun with afternoon shade.
- Shade: Ferns, begonias, and certain houseplants like the snake plant can tolerate or even prefer shaded areas. Keep these in spots where they’ll be protected from the harsh midday sun.
In addition, ensure that your plants are protected from strong winds, which can dry out plants quickly or knock them over.
Repotting or Refreshing Soil
Spring is a great time to check on your plants’ soil. After spending months indoors, the soil may have compacted, drained poorly, or lost essential nutrients. If your plants have outgrown their pots, it may be time to repot them into a larger container. Fresh soil can also improve plant health by providing better drainage and a more fertile environment.
Be mindful of the pot material. Outdoor conditions may cause certain materials like terracotta to dry out too quickly or break in harsher weather, so choose sturdy, weather-resistant pots for outdoor placement.
Watering Adjustments
Once your plants are outdoors, their water needs may change. The increased sunlight and wind can cause the soil to dry out more quickly, especially for plants in small pots or exposed to direct sunlight. Make sure to check the soil moisture regularly, and water deeply when needed.
Keep in mind that newly repotted plants or those that have been hardened off might need less water during the initial transition period, so be cautious of overwatering.
Fertilization for Growth
Outdoor conditions encourage plants to grow more actively, and they will need extra nutrients to support this growth. Apply a balanced, slow-release fertilizer (We The Wild products) to your plants when moving them outdoors to help them thriving. You can also use liquid fertilizers every 2-4 weeks for more immediate feeding.
Watch for Environmental Stress
While your plants are adjusting to outdoor life, keep an eye out for signs of stress. Some common symptoms of environmental shock include yellowing leaves, wilting, leaf burn, and stunted growth. If you notice these signs, consider bringing the plant back indoors to recover and slowly resume the hardening process.
Protecting Plants from Sudden Weather Changes
Spring and early summer weather can be unpredictable. Sudden temperature drops, thunderstorms, or hail can damage your plants if left unprotected. If you know a cold snap is coming, be ready to bring your plants back inside, or provide them with temporary shelter, such as covering them with row covers or moving them under a porch or canopy.
Also, be mindful of heavy rain or wind, which can damage delicate plants. Some plants, like hanging baskets or large-leaved tropicals, might need to be relocated to a more sheltered spot during particularly harsh weather.
@whiteoakgardens